Oganesson

Noble Gas

Heaviest known element; predicted reactive, not truly inert.

Electronic Configuration

[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹⁰ 7s² 7p⁶

Electron shells

2e⁻

n=1

8e⁻

n=2

18e⁻

n=3

32e⁻

n=4

32e⁻

n=5

18e⁻

n=6

8e⁻

n=7

Properties

Atomic number

118

Atomic mass

294 u

Oganesson

Noble Gas

Heaviest known element; predicted reactive, not truly inert.

Electronic Configuration

[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹⁰ 7s² 7p⁶

Electron shells

2e⁻

n=1

8e⁻

n=2

18e⁻

n=3

32e⁻

n=4

32e⁻

n=5

18e⁻

n=6

8e⁻

n=7

Properties

Atomic number

118

Atomic mass

294 u