Periodex

General properties

Group

group 6

Period

period 6

Category

transition metals

Standard atomic weight

183.84(1)

Melting point

3695 K (3422 °C)

Boiling point

6203 K (5930 °C)

Phase at STP

solid

Additional properties

Block

d-block

Electron configuration

[Xe] 4f¹⁴ 5d⁴ 6s²

Electrons per shell

2, 8, 18, 32, 12, 2

Electronegativity

2.36

Density

19.3 g/cm³

Oxidation states

−4, −2, −1, 0, +1, +2, +3, +4, +5, +6 (a mildly oxide)

CAS Number

7440-33-7

Natural isotopes

Discovery history

Discovered by

Carl Wilhelm Scheele

Year of discovery

1781

Origin of name

The Swedish 'tung sten' meaning heavy stone (W is wolfram, the old name of the tungsten mineral wolframite)