Silver

Silver is atom number 47 — every Silver atom has exactly 47 protons in its center, and that number is what makes it Silver and nothing else. Its symbol is Ag. At room temperature it is a solid.

Silver is a chemical element with symbol Ag (Greek:άργυρος árguros, Latin:argentum, both from the Indo-European root *h₂erǵ- for "grey" or "shining") and atomic number 47. A soft, white, lustrous transition metal, it possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal. The metal occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite.

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

Silver sits in period 5, group 11 of the d-block. Its 47 electrons fill shells of 2, 8, 18, 18, 1 — written as [Kr] 4d10 5s1. Its electronegativity is 1.93 on the Pauling scale, and pulling the first electron off takes 731 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 5s1 4d10
Ionization energies (kJ/mol): 731, 2070, 3361
Electron affinity: 125.862 kJ/mol · Electronegativity (Pauling): 1.93
Density: 10.49 g/cm³ · melts 1234.93 K · boils 2435 K

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