Element 113 · Nihonium (Nh)

Nihonium Bohr model: diagram and electrons per shell

The nihonium Bohr model shows a nihonium atom (Nh) as a small nucleus with its electrons circling it in 7 shells: 2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q. This page has a rotating 3D nihonium Bohr model, a flat diagram, a table of the electrons in each shell and the steps to draw it yourself.

Rotate the nihonium Bohr model in 3D

Drag to orbit, scroll to zoom.

This is a Bohr model of nihonium (Nh), a simplified picture of a single nihonium atom. Its nucleus holds 113 protons, and a neutral nihonium atom has 113 electrons, arranged around it in 7 shells (2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q).

Nh K · 21s² L · 82s² 2p⁶ M · 183s² 3p⁶ 3d¹⁰ N · 324s² 4p⁶ 4d¹⁰ 4f¹⁴ O · 325s² 5p⁶ 5d¹⁰ 5f¹⁴ P · 186s² 6p⁶ 6d¹⁰ Q · 37s² 7p¹

Nihonium Bohr model diagram

Bohr model diagram of nihonium: a nucleus of 113 protons with 113 electrons on 7 shells, 2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q, each ring labelled with its shell letter. — The nihonium Bohr model drawn flat: each ring is a shell, labelled with its letter, and every dot is an electron (2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q).

Nihonium electrons per shell

A neutral nihonium atom has 113 electrons, one for each of its 113 protons. They fill the shells from the nucleus outwards: 2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q.

Electrons in each shell of the nihonium Bohr model
Shell	Shell number (n)	Electrons	Most it can hold (2n²)	Subshells
K	1	2	2	1s²
L	2	8	8	2s² 2p⁶
M	3	18	18	3s² 3p⁶ 3d¹⁰
N	4	32	32	4s² 4p⁶ 4d¹⁰ 4f¹⁴
O	5	32	50	5s² 5p⁶ 5d¹⁰ 5f¹⁴
P	6	18	72	6s² 6p⁶ 6d¹⁰
Q	7	3	98	7s² 7p¹

How the nihonium Bohr model builds up, shell by shell

Watch the nihonium Bohr model come together: the nucleus first, then each shell in turn, from the innermost outwards, with its electrons joining the ring. The legend names every shell and counts its electrons, so you can read off the arrangement (2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q) as it forms.

Animation of the nihonium Bohr model being built: a nucleus of 113 protons appears first, then each shell grows in around it and takes its electrons, giving 113 electrons on 7 shells (2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q). — The nihonium Bohr model built up in six seconds: the nucleus first, then each shell with its electrons, ending with 2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q. Protons are red, neutrons yellow and electrons blue.

How to draw the nihonium Bohr model

Find the atomic number. Nihonium has atomic number 113, so a neutral atom has 113 protons and 113 electrons.
Draw the nucleus. Put a circle in the centre and write Nh in it. The 113 protons sit there with the neutrons.
Draw the shells. Sketch 7 shells as rings around the nucleus. A shell holds at most 2n² electrons: 2 in the first, 8 in the second, 18 in the third and 32 in the fourth.
Place the electrons. Fill from the inside out: 2 in shell K, 8 in shell L, 18 in shell M, 32 in shell N, 32 in shell O, 18 in shell P and 3 in shell Q.
Check the total. 2 + 8 + 18 + 32 + 32 + 18 + 3 = 113, the atomic number, so every electron is accounted for.

Atomic data for the nihonium Bohr model

The numbers behind the nihonium Bohr model, grouped by topic. Radii are in picometres (pm) and energies in kilojoules per mole (kJ/mol).

Identity

Symbol: Nh
Atomic number: 113
Atomic mass: [286] u
Family: Post-Transition Metals
Position: group 13, period 7
Block: p-block

Electron configuration

Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰ 7p¹
Shorthand: *[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹
Electrons per shell: 2, 8, 18, 32, 32, 18, 3
Outer-shell electrons: 3 in shell Q

Electronegativity and electron affinity

Electron affinity (kJ/mol): 66.6

Physical properties, abundance and history of nihonium

Bulk properties of nihonium, how common it is, who discovered it and some of its compounds.

Physical properties

Melting point: 426.85°C (700 K)
Boiling point: 1156.85°C (1430 K)
Density: 16 g/cm³

Discovery

Discovered by: RIKEN
Year: 2004

Common compounds

Nihonium Nh

Compounds listed in the PubChem database.

Main isotopes of nihonium

Isotopes of nihonium share the same 113 protons but differ in neutrons. Natural isotopes come first, then the longest-lived others.

Main isotopes of nihonium: mass number, abundance, half-life and decay
Mass number	Natural abundance	Half-life	Decay
282	–	140 ms	α
283	–	140 ms	α
284	–	0.97 s	α
285	–	4.6 s	α
286	–	12 s	α
290	–	8 s	α, SF

α = alpha decay, β⁻ = beta-minus, β⁺ = beta-plus, EC = electron capture, SF = spontaneous fission, p / n = proton / neutron emission.

More about nihonium

Nihonium on the periodic table – properties, isotopes, uses and the full nihonium page.
Post-Transition Metals – all post-transition metal elements and their trends.
Bohr model of every element – the Bohr model of all 118 elements.