113 Nh 286
Nihonium
unknown, probably transition metal
Properties
- Atomic number
- 113
- Atomic mass
- 286 u
- Category
- unknown, probably transition metal
- Group
- 13
- Period
- 7
- Block
- p-block
- State (room temp)
- Solid
- Outer-shell electrons
- 3
- Electronegativity
- —
- Density
- 16 g/cm³
- Melting point
- 426.85 °C
- Boiling point
- 1156.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p¹
Noble-gas shorthand: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹
Electrons per shell: 2, 8, 18, 32, 32, 18, 3 — that's 3 in the outermost shell.
About Nihonium
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.
- Discovered by RIKEN
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.