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.
113
Atomic Number
286
Atomic Mass (u)
16
Density (solid: g/cm³, gas: g/liter)
66.6
Electron Affinity
7
Number of Shells
3
Electron Valency
2, 8, 18, 32, 32, 18, 3
Electron Shell Occupations