The configuration of these electrons follows from the principles of quantum mechanics. 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. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. K) 60.4 Thermal Conductivity 8.3 Specific Heat 0.139 Heat of Fusion 2.295 Heat of Vaporization 59.229 Atomic Number of Mercury.Mercury – Properties Element Mercury Atomic Number 80 Symbol Hg Element Category Transition Metal Phase at STP Liquid Atomic Mass 200.59 Density at STP 13.534 Electron Configuration 4f14 5d10 6s2 Possible Oxidation States +1,2 Electron Affinity - Electronegativity 2 1st Ionization Energy 10.4375 Year of Discovery unknown Discoverer unknown Thermal properties Melting Point -38.9 Boiling Point 357 Thermal Expansion µm/(m

Mercury periodic table