Nihonium (Nh)

Nihonium is a chemical element with symbol Nh and atomic number 113. It is named after Japan (Nihon in Japanese). As a synthetic element, it can be created in a laboratory but is not found in nature.

Atomic Number

113

Atomic Mass

286 u

Phase

Predicted solid

Density

~16.0 (predicted) g/cm³

Electron Shells

2, 8, 18, 32, 32, 18, 3

Atomic Structure

Protons: 113 • Electrons: 113 • Neutrons: Varies by isotope

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p¹

Discovery

2004 • Kosuke Morita and the RIKEN team