109
Mt
meitnerium
[278]

General properties

Group
group 9
Period
period 7
Category
transition metals
Standard atomic weight
-
Melting point
unknown
Boiling point
unknown
Phase at STP
solid (predicted)

Additional properties

Block
d-block
Electron configuration
[Rn] 5f¹⁴ 6d⁷ 7s² (predicted)
Electrons per shell
2, 8, 18, 32, 32, 15, 2
Electronegativity
–
Density
37.4 g/cm³ (predicted)
Oxidation states
(+1), (+3), (+4), (+6), (+8), (+9) (parenthesized: prediction)
CAS Number
54038-01-6