What is the noble gas configuration for oxygen?

Oxygen has an of ##1s^2 2s^2 2p^4##.

Normally we do not use noble gas configuration for the first 18 . But, in the case of oxygen the noble gas would be Helium, one row up and over to the noble gas column.

Helium is represented by the ##1s^2## portion of the electron configuration. Therefore, the ##1s^2## can be replaced by the noble gas [He]. This makes the noble gas configuration for oxygen [He] 2s^2 2p^4.

I hope this was helpful. SMARTERTEACHER

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