Element 113
Nihonium (Nh)
Nihonium (Nh) is element 113 of the periodic table, a element with unclassified properties in period 7, group 13 (p-block) with an atomic mass of 286 and is a solid at standard conditions.
At a glance
- Atomic number
- 113
- Symbol
- Nh
- Atomic mass
- 286 u
- Category
- Unclassified properties
- Period
- 7
- Group
- 13
- Block
- p-block
- Phase at STP
- solid
Electron structure
- Electron configuration
- 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6 5f14 6d10 7s2 7p1
- Shorthand configuration
- [Rn] 5f14 6d10 7s2 7p1
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 3
- Oxidation states
- +3
Physical properties
- Melting point
- 700 K
- Boiling point
- 1400 K
- Density
- 16 g/cm3
- Phase
- solid
Atomic properties
- Covalent radius
- 136 pm
- First ionization energy
- 707 kJ/mol
- Electron affinity
- 67 kJ/mol
Notable isotopes
| Isotope | Mass | Abundance | Stability |
|---|---|---|---|
| Nh-286 | 286.18221 | — | Half-life 9.5 seconds |
Common uses
- Scientific research only
Discovery
- Year
- 2003
- Discovered by
- RIKEN
- Country
- Japan