
Nihonium (Nh) is a chemical element of the periodic table, located in the group 13 and the period 7, and has the atomic number 113. Its name comes from the word “nihon”, the common Japanese name for Japan. It is a transuranium element and is counted as one of the radioactive elements. It is a member of the boron group.
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– p block |
FAQs on Nihonium Element
Nihonium |
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‣ Who discovered nihonium? When was nihonium discovered? Discovery: Riken (Japan, first undisputed claim 2004) JINR (Russia) and Livermore (US, first announcement 2003) |
‣ Where is nihonium on the periodic table?![]() Location: Nihonium is found in the seventh row of the periodic table, next to the copernicium element. |
‣ Nihonium atomic number (Z): 113 |
‣ Nihonium symbol: Nh |
‣ Nihonium atomic weight: [286] |
‣ What block is nihonium in the periodic table? Block: p-block |
‣ What group is nihonium in the periodic table? Group: 13 (boron group) |
‣ What period is nihonium in the periodic table? Period: 7 |
‣ What is the atomic radius of nihonium? Atomic radius: empirical: 170 pm (predicted) |
‣ Nihonium covalent radius: 172-180 pm (extrapolated) |
‣ What is nihonium melting point? Melting point: 700 K (430 °C, 810 °F) (predicted) |
‣ What is nihonium boiling point? Boiling point: 1430 K (1130 °C, 2070 °F) (predicted) |
‣ How many electron shells does nihonium have? Electrons per shell: 2, 8, 18, 32, 32, 18, 3 (predicted) |
‣ What is the electron configuration for nihonium? Electron configuration: [Rn] 5f14 6d10 7s2 7p1 (predicted) |
‣ Nihonium ionization energies: 1st: 704.9 kJ/mol (predicted) 2nd: 2240 kJ/mol (predicted) 3rd: 3020 kJ/mol (predicted) |
‣ Is nihonium a solid, liquid or gas? Phase (at r.t): solid (predicted) |
‣ Nihonium density (near r.t): 16 g/cm3 (predicted) |
‣ Nihonium natural occurrence: synthetic |
‣ Nihonium oxidation state: +1 |
‣ Nihonium heat of fusion: 7.61 kJ/mol (extrapolated) |
‣ Nihonium heat of vaporization: 130 kJ/mol (predicted) |
‣ What is the crystal structure of nihonium? Crystal structure: hexagonal close-packed (hcp) (predicted) |
‣ Nihonium CAS number: 54084-70-7 |
‣ How many isotopes does nihonium have?
Main isotopes of nihonium | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
278Nh | syn | 1.4 ms | α | 274Rg |
282Nh | syn | 73 ms | α | 278Rg |
283Nh | syn | 75 ms | α | 279Rg |
284Nh | syn | 0.91 s | α EC | 280Rg 284Cn |
285Nh | syn | 4.2 s | α | 281Rg |
286Nh | syn | 9.5 s | α | 282Rg |
287Nh | 5.5 s? | α | 283Rg | |
290Nh | syn | 2 s ? | α | 286Rg |
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