Periodex

General properties

Group

group 14

Period

period 6

Category

post-transition metals

Standard atomic weight

207.2(1)

Melting point

600.61 K (327.46 °C)

Boiling point

2022 K (1749 °C)

Phase at STP

solid

Additional properties

Block

p-block

Electron configuration

[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²

Electrons per shell

2, 8, 18, 32, 18, 4

Electronegativity

1.87

Density

11.34 g/cm³

Oxidation states

−4, −2, −1, +1, +2, +3, +4 (an amphoteric oxide)

CAS Number

7439-92-1

Natural isotopes

Discovery history

Discovered by

ancient civilizations

Year of discovery

7000 BCE

Origin of name

The Anglo-Saxon lead (plumbum in Latin)