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. The Cookies Statement is part of our Privacy Policy. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. Mass numbers of typical isotopes of Platinum are 194, 195, 196, 198. Compressibility (also known as the coefficient of compressibility is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change. Element Classification: Metal. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. The nucleus is composed of protons and neutrons. The chemical symbol for Platinum is Pt. It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. Atlas » Learn more about the world with our collection of regional and country maps. Chemical symbol for Platinum is Pt. As a result, the electron cloud contracts and the atomic radius decreases. Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Nuclides / Isotopes; Potential Parent Nuclides. The chemical symbol for Technetium is Tc. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. Platinum is one of the least reactive metals. Period Number: 6. The atomic number of Platinum is 78, and the atomic mass of Platinum is 195.094 g/mol. Platinum is rightly labeled as a ‘noble metal’. www.nuclear-power.net. The chemical symbol for Zirconium is Zr. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. A very hard, brittle, silvery-white transition metal of the platinum group, iridium is considered to be the second-densest metal (after osmium) with a density of 22.56 g/cm 3 as defined by experimental X-ray crystallography. Sources. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. Due to the quantum nature of electrons, the electrons are not point particles, they are smeared out over the whole atom. According to the Einstein relationship (E=mc2), this binding energy is proportional to this mass difference and it is known as the mass defect. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Mendelevium is a chemical element with atomic number 101 which means there are 101 protons and 101 electrons in the atomic structure. 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. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Each entry has a full citation identifying its source. The chemical symbol for Berkelium is Bk. Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. The chemical symbol for Gold is Au. Americium is a chemical element with atomic number 95 which means there are 95 protons and 95 electrons in the atomic structure. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. Sodium is a soft, silvery-white, highly reactive metal. Atomic Mass of Platinum Atomic mass of Platinum is 195.078 u. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. The platinum atom has a radius of 139 pm and a Van der Waals radius of 175 pm. If we include man made elements, the densest so far is Hassium. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. Properties . The chemical symbol for Helium is He. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Atomic Mass. The unit of measure for mass is the atomic mass unit (amu). For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. Discovered in South America by Ulloa in 1735 and by Wood in 1741. Therefore, we cannot determine the neutron number of uranium, for example. Copernicium - Atomic Mass - Atomic Weight - Cn, Iridium - Atomic Mass - Atomic Weight - Ir, Osmium - Atomic Mass - Atomic Weight - Os, Actinium - Atomic Mass - Atomic Weight - Ac, Polonium - Atomic Mass - Atomic Weight - Po, Arsenic - Atomic Mass - Atomic Weight - As, Iridium – Atomic Mass – Atomic Weight – Ir. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Number of Protons. Actinium is a soft, silvery-white radioactive metal. Francium is an alkali metal, that has one valence electron. Krypton is a member of group 18 (noble gases) elements. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Lead is Pb. Below is a list of Great Platinum slogans for chemistry assignments, science projects & project presentations. The chemical symbol for Samarium is Sm. The chemical symbol for Gadolinium is Gd. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. The chemical symbol for Thorium is Th. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. Caesium has physical and chemical properties similar to those of rubidium and potassium. The chemical symbol for Arsenic is As. The chemical symbol for Curium is Cm. 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. Density is defined as the mass per unit volume. The word Platinum is derived from Platina (Spanish word meaning ‘little silver’), because of its grey-white silvery colour. Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). Thulium is an easily workable metal with a bright silvery-gray luster. The chemical symbol for Chlorine is Cl. Name: Platinum. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The atomic radius of Platinum atom is 136pm (covalent radius). Platinum is ductile, malleable, silvery-white or gray-white in color, and non-reactive. Platinum with the atomic number 78 and an atomic mass of 195 in the periodic table is an extremely rare element found in the crust of the earth. Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. Thorium is moderately hard, malleable, and has a high melting point. 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. What's in a name? It is present in a concentration of as low as around 0.005 ppm (5micrograms per kg) in the Earth’s crust. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Uranium is a silvery-white metal in the actinide series of the periodic table. The size and mass of atoms are so small that the use of normal measuring units, while possible, is often inconvenient. Increasing the pressure on an material (especially for liquids or gases) decreases the volume of the object and thus increases its density via the atomic number density. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. Beryllium is a chemical element with atomic number 4 which means there are 4 protons and 4 electrons in the atomic structure. Oxygen is a colourless, odourless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. It is found in gold-bearing deposits in the USA, Columbia, and the Ural Mountains. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Pure platinum is slightly harder than pure iron and hence does not wear out too soon. The chemical symbol for Terbium is Tb. Because of its high chemical reactivity, barium is never found in nature as a free element. The chemical symbol for Nobelium is No. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Platinum (Pt), chemical element, the best known and most widely used of the six platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. The chemical symbol for Niobium is Nb. The chemical symbol for Rubidium is Rb. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Osmium – Periodic Table – Atomic Number – Mass – Radius – Density, Gold – Periodic Table – Atomic Number – Mass – Radius – Density. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. The chemical symbol for Rhodium is Rh. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. 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 Cadmium is Cd. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Particle locations in quantum mechanics are not at an exact position, they are described by a probability density function. This effect is caused by a decrease in the atomic number density. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 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. 78 Pt Platinum 195.084. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. It is classified as a transition metal. The platinum melting point is 1768.3° C, and the Boiling point is 3825 ° C. It is solid at room temperature. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. Platinum is a chemical element in the periodic table that has the atomic symbol Pt and an atomic number of 78. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. There are also 34 known synthetic radioisotopes, the longest-lived of which is 193 Pt with a half-life of 50 years. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. But this “huge” space is occupied primarily by electrons, because the nucleus occupies only about 1721×10−45 m3 of space. Melting Point: 1772.0 °C (2045.15 K, 3221.6 °F) Boiling Point: 3827.0 °C (4100.15 K, 6920.6 °F) Number of Protons/Electrons: 78. Einsteinium is the seventh transuranic element, and an actinide. It is primarily prevalent in the alluvial deposit layer along with sand and clay particles. 1) You may use almost everything for non-commercial and educational use. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Platinum is a transition metal element. 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. Atomic weight of Platinum is 195.084 u or g/mol. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The chemical symbol for Aluminum is Al. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. The atomic mass is the mass of an atom. Hafnium’s large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. The chemical symbol for Molybdenum is Mo. The chemical symbol for Radon is Rn. Atomic Mass: 195.078 amu. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. The chemical symbol for Tantalum is Ta. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. The chemical symbol for Francium is Fr. 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. 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. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. They can also be used for Platinum advertisement and marketing. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. The chemical symbol for Radium is Ra. 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”. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Neptunium metal is silvery and tarnishes when exposed to air. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. The unit of measure for mass is the atomic mass unit (amu). Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. The most com… Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10-19 coulombs. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Typical densities of various substances are at atmospheric pressure. Titanium condenser tubes are usually the best technical choice, however titanium is very expensive material. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. It is occasionally found in native form as elemental crystals. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. All other isotopes have half-lives under a year, most under a day. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. Titanium can be used in surface condensers. Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. It may seem, that the space and in fact the matter is empty, but it is not. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. The size and mass of atoms are so small that the use of normal measuring units, while possible, is often inconvenient. Platinum also combines with a number of nonmetallic elements on heating, such as phosphorus, arsenic, antimony, silicon, sulfur, and selenium. It is even less abundant than the so-called rare earths. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. It is a Transition metal in Group 10. Atomic massof Platinum is 195.078 u. Platinum (Pt) is a heavy white metal that has the atomic number 78 in the periodic table.

platinum atomic number

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platinum atomic number 2020