Your email address will not be published. The chemical symbol for Californium is Cf. Refractory metals are also characterized by a low coefficient of thermal expansion. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. The atomic number of niobium is 41 and it is indicated by symbol is Nb. Small amounts of niobium impart greater strenght to other metals, especially those that are exposed to low temperatures. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. for 1+3, enter 4. All of its isotopes are radioactive. There are around 18 known isotopes of niobium. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. The chemical symbol for Germanium is Ge. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Tellurium is chemically related to selenium and sulfur. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. In refractory metals, the energy binding the individual atoms together is particularly high. The chemical symbol for Francium is Fr. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Berkelium is a member of the actinide and transuranium element series. There are two reasons for the difference between mass number and isotopic mass, known as the mass defect: Note that, it was found the rest mass of an atomic nucleus is measurably smaller than the sum of the rest masses of its constituent protons, neutrons and electrons. Niobium does not react with noble gases. Pure radium is silvery-white alkaline earth metal. We use only the purest niobium as our input material. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). Niobium comprises of one stable isotope in the Earth’s crust. The chemical symbol for Gold is Au. The atomic number of niobium is 41 and it is indicated by symbol is Nb. Francium is a highly radioactive metal that decays into astatine, radium, and radon. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. Units of measure have been defined for mass and energy on the atomic scale to make measurements more convenient to express. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. 2410 °C. For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. The chemical symbol for Mendelevium is Md. Applications of Niobium; Atomic number: 41: CAS number: 7440-03-1: Atomic mass: 92.91: Melting point: 2,468 °C: Boiling point: 4,744 °C: Atomic volume: 0.0180 [nm³] Density at 20 °C: 8.57 [g/cm³] Crystal structure: body-centred cubic: Lattice constant: 329 [pm] Abundance in the Earth's crust: 20.0 [g/t] Guaranteed purity. Here you can download our safety data sheets: Radiation generation, radiation protection and beam guidance, Welding aids made of molybdenum / tantalum, Coefficient of linear thermal expansion at 20 °C (293 K), Specific electrical resistance at 20 °C (293 K), Capture cross-section for thermal neutrons, Recrystallization temperature (annealing time: 1 hour), Superconductivity (transition temperature), Positive polarization of the metals (approx. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Einsteinium is the seventh transuranic element, and an actinide. Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. and Gay-Lussac, L.-J.