Periodex

General properties

Group

group 7

Period

period 6

Category

transition metals

Standard atomic weight

186.207(1)

Melting point

3459 K (3186 °C)

Boiling point

5903 K (5630 °C)

Phase at STP

solid

Additional properties

Block

d-block

Electron configuration

[Xe] 4f¹⁴ 5d⁵ 6s²

Electrons per shell

2, 8, 18, 32, 13, 2

Electronegativity

1.9

Density

21.02 g/cm³

Oxidation states

−3, −1, 0, +1, +2, +3, +4, +5, +6, +7 (a mildly oxide)

CAS Number

7440-15-5

Natural isotopes

Discovery history

Discovered by

Masataka Ogawa

Year of discovery

1908

Origin of name

Rhine, a river that flows from Grisons in the eastern Swiss Alps to the North Sea coast in the Netherlands (with the Latin name Rhenia)