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. Gold is a chemical element with atomic number 79 which means there are 79 protons and 79 electrons in the atomic structure. K) 14.2 Thermal Conductivity 320 Specific Heat 0.128 Heat of Fusion 12.55 Heat of Vaporization 334.4 Atomic Number of Gold.Gold – Properties Element Gold Atomic Number 79 Symbol Au Element Category Transition Metal Phase at STP Solid Atomic Mass 196.9665 Density at STP 19.3 Electron Configuration 4f14 5d10 6s1 Possible Oxidation States +1,3 Electron Affinity 222.8 Electronegativity 2.54 1st Ionization Energy 9.2257 Year of Discovery unknown Discoverer unknown Thermal properties Melting Point 1064 Boiling Point 2970 Thermal Expansion µm/(m
