Periodex

General properties

Group

group 11

Period

period 5

Category

transition metals

Standard atomic weight

107.8682(2)

Melting point

1234.93 K (961.78 °C)

Boiling point

2435 K (2162 °C)

Phase at STP

solid

Additional properties

Block

d-block

Electron configuration

[Kr] 4d¹⁰ 5s¹

Electrons per shell

2, 8, 18, 18, 1

Electronegativity

1.93

Density

10.49 g/cm³

Oxidation states

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

CAS Number

7440-22-4

Natural isotopes

Discovery history

Discovered by

ancient civilizations

Year of discovery

before 5000 BCE

Origin of name

The Anglo-Saxon name siolfur (argentum in Latin)