Gold

Gold is atom number 79 — every Gold atom has exactly 79 protons in its center, and that number is what makes it Gold and nothing else. Its symbol is Au. At room temperature it is a solid.

Gold is a chemical element with symbol Au (from Latin:aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element.

Summary from the source dataset, derived from Wikipedia (CC BY-SA 3.0) · original article

Gold sits in period 6, group 11 of the d-block. Its 79 electrons fill shells of 2, 8, 18, 32, 18, 1 — written as [Xe] 4f14 5d10 6s1. Its electronegativity is 2.54 on the Pauling scale, and pulling the first electron off takes 890.1 kJ/mol. The outermost shell holds 1 electron — the ones that do all the chemistry.

Full configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d10
Ionization energies (kJ/mol): 890.1, 1980
Electron affinity: 222.747 kJ/mol · Electronegativity (Pauling): 2.54
Density: 19.3 g/cm³ · melts 1337.33 K · boils 3243 K

Values exactly as published — see where the data comes from.