Lead (Pb) — Element 82

82 Pb 207.2

Lead

Element 82 · 207.2 u · p-block

post transition

A dense, soft metal known since ancient Rome. Excellent radiation shielding. Now known to be toxic, especially to children.

Phase (STP)

Solid

Melting Point

327.46 °C

Boiling Point

1749 °C

Density

11.342 g/cm³

Electronegativity

1.87

Atomic Radius

180 pm

Ionization Energy

716 kJ/mol

Electron Affinity

35 kJ/mol

Discovered

Ancient · Known since antiquity

Electron Configuration

[Xe] 4f14 5d10 6s2 6p2