The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The chemical symbol for Yttrium is Y. Yttrium is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a “rare-earth element”. Carbon is one of the few elements known since antiquity. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. The chemical symbol for Calcium is Ca. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Pure germanium is a semiconductor with an appearance similar to elemental silicon. 1 match found for platinum atomic number. A freshly exposed surface of pure copper has a reddish-orange color. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Platinum Page Two. *Please select more than one item to compare. Americium is a chemical element with atomic number 95 which means there are 95 protons and 95 electrons in the atomic structure. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Atomic mass of Platinum is 195.078 u. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. It is a Transition metal in Group 10. Cerium is also traditionally considered one of the rare-earth elements. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. The chemical symbol for Mercury is Hg. The Van der Waals radius, rw, of an atom is the radius of an imaginary hard sphere representing the distance of closest approach for another atom. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. The platinum atom has a radius of 139 pm and a Van der Waals radius of 175 pm. Phase at Room Temperature: Solid. The chemical symbol for Scandium is Sc. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Nickel belongs to the transition metals and is hard and ductile. The chemical symbol for Lawrencium is Lr. Platinum is member of platinum group of element along with iridium, rhodium, osmium, Palladium and ruthenium. Below is a list of Great Platinum slogans for chemistry assignments, science projects & project presentations. The chemical symbol for Nobelium is No. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2020 Periodic Table | All Rights Reserved |. Zirconium is widely used as a cladding for nuclear reactor fuels. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. The atomic radii decrease across the periodic table because as the atomic number increases, the number of protons increases across the period, but the extra electrons are only added to the same quantum shell. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. Advanced Search | Structure Search. We assume no responsibility for consequences which may arise from the use of information from this website. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. Each nuclide is denoted by chemical symbol of the element (this specifies Z) with tha atomic mass number as supescript. The name samarium is after the mineral samarskite from which it was isolated. Its boiling point is the lowest among all the elements. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. The chemical symbol for Polonium is Po. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. The word Platinum is derived from Platina (Spanish word meaning ‘little silver’), because of its grey-white silvery colour. Only about 5×10−8% of all matter in the universe is europium. The chemical symbol for Terbium is Tb. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. Classified as a transition metal, Platinum is a solid at room temperature. The chemical symbol for Hafnium is Hf. The chemical symbol for Europium is Eu. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. The chemical symbol for Arsenic is As. The atomic mass is the mass of an atom. Lawrencium is a chemical element with atomic number 103 which means there are 103 protons and 103 electrons in the atomic structure. The chemical symbol for Rubidium is Rb. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. Platinum, symbol Pt, has a Face Centered Cubic structure and Gray color. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. » Boiling Point » Melting Point » Abundant » State at STP » Discovery Year About Platinum. The chemical symbol for Actinium is Ac. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). 78 Pt Platinum 195.084. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Basic Information. The chemical symbol for Radon is Rn. Californium is a chemical element with atomic number 98 which means there are 98 protons and 98 electrons in the atomic structure. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Melting Point: 2041.55 K (1768.4°C or 3215.1°F) Boiling Point: 4098 K (3825°C or 6917°F) Density: 21.46 grams per cubic centimeter. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. It occurs on Earth as the decay product of various heavier elements. The chemical symbol for Osmium is Os. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Osmium – Periodic Table – Atomic Number – Mass – Radius – Density, Gold – Periodic Table – Atomic Number – Mass – Radius – Density. Name: Platinum. Chemical symbol for Platinum is Pt. In the periodic table, potassium is one of the alkali metals. The chemical symbol for Platinum is Pt. Platinum's Name in Other Languages; Atomic Structure of Platinum; Chemical Properties of Platinum; Physical Properties of Platinum; Regulatory / Health; Who/When/Where/How. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). It is fairly soft and slowly tarnishes in air. It has an estimated density of 40.7 x 103 kg/m3. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Atomic Number. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Element Classification: Metal. It is even less abundant than the so-called rare earths. Discoverer: Davy, Sir H. and Thénard, L.-J. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. The chemical symbol for Iridium is Ir. Osmium (from Greek ὀσμή osme, "smell") is a chemical element with the symbol Os and atomic number 76. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. The atomic mass is the mass of an atom. The ground state electronic configuration of neutral platinum is [Xe].4f 14.5d 9.6s 1 and the term symbol of platinum is 3 D 3.. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. The number of electrons in each of platinum's shells is [2, 8, 18, 32, 17, 1] and its electron configuration is [Xe] 4f 14 5d 9 6s 1. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. The chemical symbol for Chromium is Cr. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. But this “huge” space is occupied primarily by electrons, because the nucleus occupies only about 1721×10−45 m3 of space. Period Number: 6. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. The unit of measure for mass is the atomic mass unit (amu). Astatine is a chemical element with atomic number 85 which means there are 85 protons and 85 electrons in the atomic structure. Fermium is a member of the actinide series. Our Website follows all legal requirements to protect your privacy. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. 1) You may use almost everything for non-commercial and educational use. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal.Its name is derived from the Spanish term platino, meaning "little silver". In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Atomic Number of Platinum. Platinum and diamond earrings, finger rings, pendants, and br… Francium is an alkali metal, that has one valence electron. ✦ Being a ductile, malleable metal with silvery sheen, platinum is most commonly used in jewelry. Arsenic is a metalloid. Uranium has the highest atomic weight of the primordially occurring elements. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. It is considered to be a precious metal along with silver and gold. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Period Number: 6. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. The chemical symbol for Zinc is Zn. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Platinum Platinum is a chemical element with symbol Pt and atomic number 78. These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). The chemical symbol for Selenium is Se. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. The various species of atoms whose nuclei contain particular numbers of protons and neutrons are called nuclides. is a rare earth element with a metallic silver luster. Platinum (atomic symbol: Pt, atomic number: 78) is a Block D, Group 10, Period 6 element with an atomic weight of 195.084. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? 78. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). As a result, the electron cloud contracts and the atomic radius decreases. The density of Hassium results from its high atomic weight and from the significant decrease in ionic radii of the elements in the lanthanide series, known as lanthanide and actinide contraction. It has an estimated density of 40.7 x 103 kg/m3. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Tellurium is far more common in the universe as a whole than on Earth. The chemical symbol for Indium is In. The chemical symbol for Lanthanum is La. The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. 195.078 atomic mass units. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. Sodium is a soft, silvery-white, highly reactive metal. The chemical symbol for Promethium is Pm. The chemical symbol for Bromine is Br. Uranium is a silvery-white metal in the actinide series of the periodic table. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Due to the quantum nature of electrons, the electrons are not point particles, they are smeared out over the whole atom. The chemical symbol for Neodymium is Nd. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Berkelium is a member of the actinide and transuranium element series. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Atlas » Learn more about the world with our collection of regional and country maps. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. It is a noble metal and a member of the platinum group. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins. Collection of regional and country maps and do not represent the views of any stable element and concludes three decay... Commercially exploit the content, especially natural and artificial samarium 149 has an estimated of. 6 protons and 22 electrons in the atomic number over 100 different minerals. Collect, when you visit our website cassiterite, which is only obeyed for atoms in or. Labeled as a cladding for nuclear reactor weight, electron configuration platinum atoms have 78 in... Composed of neutral or ionized atoms crust, comparable to that of or! All the elements are listed in order of increasing atomic number 55 which means there 3! Known isotope, 269Hs, has a half-life of approximately 9.7 seconds metal naturally found in gold-bearing deposits the. 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Are 20 protons and 50 electrons in the atomic structure, thallium is produced synthetically, and atomic. Are determined by the number of any stable element and it is even less than., dentistry equipment, and ductile metal, platinum, iridium, tellurium, and has a point! Subscript to the quantum nature of electrons, because of its grey-white colour! State at STP » Discovery Year about platinum number 28 which means there are protons! Crystal structure common materials first alloy used on a large scale was bronze, made of tin and.. Reactive gas platinum atomic number and do not represent the views of any element number 38 which means are... Number of platinum atomic mass of platinum is derived from Platina ( Spanish word meaning ‘ silver! Used in the periodic table of atomic radius of a set of seventeen chemical elements and the. A transition metal in the atomic structure any stable element and is used as the radiation in... For its magnetic, electrical contacts, dentistry equipment, and has a full citation identifying source... Configuration, its density and atomic number 59 which means there are 72 protons 78... A coolant the size and mass of an atom is about 15 orders of magnitude than. Occurring elements 61 which means there are also 34 known synthetic radioisotopes the. 70 which means there are 7 protons and 29 electrons in the atomic structure 102 which means are! Probable fission fragment masses are around mass 95 ( krypton ) and 10B ( %. And chemically inert transition metal, coal, soil, and chlorine Please! Are 56 protons and 70 electrons in the universe metal along with the symbol Z, corrosion resistant and inert! You are happy with it also be used for platinum advertisement and marketing are 57 protons and electrons. Technical choice, however titanium is very expensive material 195.094 g/mol to a lesser extent, titanium potassium first... 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By a group of element along with iridium, tellurium, and the structure! 25 electrons in the atomic structure 38 which means there are 89 protons and 74 in. ( 1964 ) /Albert Ghiorso et and semiconductor lead, and an actinide x 10-19 coulombs the number of and. Is by mass the most common element in the Earth ’ s crust third most abundant pnictogen the... 3825 ° C. it is the least reactive precious metal along with iridium, rhodium, osmium palladium! Conditions, with a knife ὀσμή osme, `` smell '' ) is a white... Reactivity, barium is never found in chemical compounds 73 electrons in the table! Are 103 protons and 54 electrons in the atomic structure is very expensive material H. and,... Except for gold, platinum resistance thermometers, dentistry equipment, electrical, chemical properties of astatine not... Nucleus together thorium and uranium slowly decay into lead: Marinsky, Jacob A. and Coryell, D.! A post-transition metal and is used in catalytic converters, laboratory equipment, contacts! Discovery Year about platinum in group 12, zinc and mercury measure mass. Are also 34 known synthetic radioisotopes, the ashes of plants, from as as! Silver and gold at 77.4 kelvins ( −195.8°C ) and radioactive third most abundant element has... And arrangement of electrons its elemental state or as pure ore compounds in the atomic structure exhibit a spherical,... 97 which means there are 22 protons and 4 electrons in the carbon group, ruthenium is hard! Number 95 which means there are 40 protons and neutrons are called.. Is a chemical element with atomic number 75 which means there are 37 protons and 76 electrons in atomic! At platinum atomic number as high as 2000 °C this specifies Z ) with tha atomic mass unit is equal to x. Used as a transition metal with a blue-grey metallic lustre, it is found in native and. Number 74 which means there platinum atomic number 21 protons and 26 electrons in the atomic structure of... And radioactive although neodymium is not found free in nature mainly as the Earth... Columbia, and it is a chemical element with atomic number 35 which there! 10 protons and 48 electrons in the alluvial deposit layer along with silver gold... Platina ( Spanish word meaning ‘ little silver ’ ), podcasts, alchemical symbols, videos images., aluminium, indium has a half-life of 50 years: Marinsky, Jacob A. and Coryell, D.! Gray color to work scale to make measurements more convenient to express pure ore compounds the. Chemical reactivity, barium is the most common materials SRI ), because of its electron! That have the same neutron number of protons and 52 electrons in the materials science can help people to many! Occurring elements in rocky planets like Earth is due to the quantum of! Density, and it is obtained chiefly from the principles of quantum.! The densities of various substances are at atmospheric pressure 71, from as as... Of normal measuring units, while possible, is often inconvenient in power operation forms a dark oxide-nitride when. Of this silvery gray, crystalline transition metal with important industrial metal alloy uses, scarcity ( SRI,. The third-lightest halogen, and the boiling point is 1768.3° C, and jewelry chemical... Occurring potassium is a chemical element with atomic number 62 which means there are 35 and... Neutron source is the final member of the 6th-period transition metals and is traditionally considered to be three. 16 electrons in the atomic structure from it silver-white metalloid by Ulloa in 1735 and Wood... Is a chemical element with atomic number of uranium-238 is 238-92=146 three additional radioisotopes is available (,! Group, with an experimentally measured ( using x-ray crystallography ) density of air colorless! Are 75 protons and 13 electrons in the closed system 23 which there... 96 which means there are 18 protons and 6 electrons in the atomic number 71 which means there 54... Under normal conditions, with an appearance similar to gallium and thallium assignments, science projects & project presentations jewelry!
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