113Unknown properties · Group 13 · Period 7
Nihonium
Nihonium (Nh) is element 113, a unknown properties in the p-block — group 13, period 7. It is a solid at room temperature with 7 electron shells (2, 8, 18, 32, 32, 18, 3) and an atomic mass of 286 u.
- Atomic mass
- 286.0 u
- Phase · STP
- solid
- Melting
- 700 K · 427 °C
- Boiling
- 1430 K · 1157 °C
- Electronegativity
- —
- Density
- 16 g/cm³
Photograph — Chemical Elements A Virtual Museum under a Creative Commons Attribution 3.0 Unported License, source: https://images-of-elements.com/nihonium.php
Identity
- Atomic number
- 113
- Standard atomic weight
- 286.0 u
- Category
- Unknown properties
- Group
- 13
- Period
- 7
- Block
- p-block
- Oxidation states
- —
Physical properties
- Melting point
- 700 K · 427 °C
- Boiling point
- 1430 K · 1157 °C
- Density
- 16 g/cm³
- Molar heat capacity
- —
- Atomic radius
- —
- Electron affinity
- 66.6 kJ/mol
Atomic structure
113protons
173neutrons
113electrons
3valence e⁻
- Noble-gas notation
- *[Rn] 5f14 6d10 7s2 7p1
- Full configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p1
- Electrons per shell
- 2, 8, 18, 32, 32, 18, 3
Periodic trends
Where Nihonium ranks across all 118 elements.
Discovery
- Discovered
- 2004
- Discovered by
- RIKEN
- Named by
- —
- Appearance
- —