113Nh286.000
Transition Metalp-blockRadioactivePredicted properties
Nihonium
Element 113 on the periodic table, symbol Nh, group 13, period 7.
Nihonium is a chemical element with atomic number 113. It has a symbol Nh. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of 20 seconds.
Properties
- Atomic Number
- 113
- Atomic Mass
- 286.0000 u
- Group
- 13
- Period
- 7
- Block
- p-block
- Category
- Transition Metal
- State at 25 °C
- Solid
- Melting Point
- 700 K · 426.9 °C
- Boiling Point
- 1,430 K · 1,156.9 °C
- Density
- 16 g/cm³
- Atomic Radius
- Not measured
- Electronegativity
- Not measured
- Oxidation States
- None commonly seen
- Abundance in Crust
- Vanishingly rare
- Discovered
- 2003
- Discovered By
- RIKEN
Electron Configuration
*[Rn] 5f14 6d10 7s2 7p1
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p1
Elements near Nihonium
Elements in the same group share the number of outer electrons and behave in similar ways. Elements in the same period share a shell, so they change steadily from left to right.