Element 118 · Oganesson (Og)

Oganesson Bohr model: diagram and electrons per shell

The oganesson Bohr model shows a oganesson atom (Og) 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 8 in shell Q. This page has a rotating 3D oganesson Bohr model, a flat diagram, a table of the electrons in each shell and the steps to draw it yourself.

Rotate the oganesson Bohr model in 3D

Drag to orbit, scroll to zoom.

This is a Bohr model of oganesson (Og), a simplified picture of a single oganesson atom. Its nucleus holds 118 protons, and a neutral oganesson atom has 118 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 8 in shell Q).

Og K · 21s² L · 82s² 2p⁶ M · 183s² 3p⁶ 3d¹⁰ N · 324s² 4p⁶ 4d¹⁰ 4f¹⁴ O · 325s² 5p⁶ 5d¹⁰ 5f¹⁴ P · 186s² 6p⁶ 6d¹⁰ Q · 87s² 7p⁶

Oganesson Bohr model diagram

Bohr model diagram of oganesson: a nucleus of 118 protons with 118 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 8 in shell Q, each ring labelled with its shell letter. — The oganesson 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 8 in shell Q).

Oganesson electrons per shell

A neutral oganesson atom has 118 electrons, one for each of its 118 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 8 in shell Q.

Electrons in each shell of the oganesson 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	8	98	7s² 7p⁶

How the oganesson Bohr model builds up, shell by shell

Watch the oganesson 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 8 in shell Q) as it forms.

Animation of the oganesson Bohr model being built: a nucleus of 118 protons appears first, then each shell grows in around it and takes its electrons, giving 118 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 8 in shell Q). — The oganesson 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 8 in shell Q. Protons are red, neutrons yellow and electrons blue.

How to draw the oganesson Bohr model

Find the atomic number. Oganesson has atomic number 118, so a neutral atom has 118 protons and 118 electrons.
Draw the nucleus. Put a circle in the centre and write Og in it. The 118 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 8 in shell Q.
Check the total. 2 + 8 + 18 + 32 + 32 + 18 + 8 = 118, the atomic number, so every electron is accounted for.

Atomic data for the oganesson Bohr model

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

Identity

Symbol: Og
Atomic number: 118
Atomic mass: [294] u
Family: Noble Gases
Position: group 18, 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 7p⁶
Shorthand: *[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶
Electrons per shell: 2, 8, 18, 32, 32, 18, 8
Outer-shell electrons: 8 in shell Q

Electronegativity and electron affinity

Electron affinity (kJ/mol): 5.403

Physical properties, abundance and history of oganesson

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

Physical properties

Boiling point: 76.85°C (350 K)
Density: 4.95 g/cm³

Discovery

Discovered by: Joint Institute for Nuclear Research
Year: 2002

Common compounds

Oganesson Og

Compounds listed in the PubChem database.

Main isotopes of oganesson

Isotopes of oganesson share the same 118 protons but differ in neutrons. Natural isotopes come first, then the longest-lived others.

Main isotopes of oganesson: mass number, abundance, half-life and decay
Mass number	Natural abundance	Half-life	Decay
294	–	0.7 ms	α, SF
295	–	680 ms	α

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

More about oganesson

Oganesson on the periodic table – properties, isotopes, uses and the full oganesson page.
Noble Gases – all noble gas elements and their trends.
Bohr model of every element – the Bohr model of all 118 elements.