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Nihonium Nh  (Element 113) of periodic table

Nihonium Nh (Element 113) of periodic table

113 Nh (Nihonium)

Atomic Mass – 286

Atomic weight – 286.1810 (g/mol)

kAtomic number (Z) – 113

Electrons: 113

Protons: 113

Neutrons: 171

Group – 13

Period – 7

Block – P

Element category – Post-transition metal (Base Metal)

Electron configuration – 1s22s22p63s23p63d104s24p64d105s25p64f145d106s26p65f146d107s27p1

Electrons per shell – K2, L8, M18, N32, O32, P18, Q3

Phase – Solid

Melting point – 700 K (427 oC)

Boiling point – 1430 K (1157 oC)

Density – 16 g/cm3

Heat of fusion – 7.61 kJ/mol

Heat of vaporization – 130 kJ/mol

Oxidation states – -1, 1, 3, 5

Ionization energies – 1st: 704.9 kJ/mol, 2nd: 2238.5 kJ/mol, 3rd: 3203.3 kJ/mol

Atomic radius – 170 pm

Covalent radius – 172 – 180 pm

Crystal structure – Hexagonal close-packed

CAS Number – 54084-70-7

Naming – After Japan (Nihon in Japanese)

Appearance – Highly radioactive metal

Discovery – Scientists from RIKEN in Japan (2004)

Isotopes – 290Nh 287Nh 286Nh 285Nh 284Nh 283Nh 282Nh 278Nh

Uses – At present, it is only used in research

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