Chromium symbol periodic table7/9/2023 ![]() The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. See also: Atomic Number – Does it conserve in a nuclear reaction? Atomic Number and Chemical PropertiesĮvery solid, liquid, gas, and plasma is composed of neutral or ionized atoms. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. In a neutral atom there are as many electrons as protons moving about nucleus. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The nucleus is composed of protons and neutrons. The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons. ![]() ![]() Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. K) 13.4 Thermal Conductivity 90.7 Specific Heat 0.44 Heat of Fusion 17.47 Heat of Vaporization 370.4 Atomic Number of Nickel. ![]() Nickel – Properties Element Nickel Atomic Number 28 Symbol Ni Element Category Transition Metal Phase at STP Solid Atomic Mass 58.6934 Density at STP 8.908 Electron Configuration 3d8 4s2 Possible Oxidation States +2,3 Electron Affinity 112 Electronegativity 1.91 1st Ionization Energy 7.6398 Year of Discovery 1751 Discoverer Cronstedt, Alex Fredrik Thermal properties Melting Point 1455 Boiling Point 2730 Thermal Expansion µm/(m ![]()
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