What is the (noble gas notation) electron configuration for oxygen, O?

Md Ariful Islam

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Md Ariful Islam

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The elements in the last group of Periodic Table are called noble gasses. The electron configuration of oxygen is 1s22s22p4. First 2 electrons are electrons of inner shell and the same as a configuration of previews period's noble gas Helium. So, for the sake of simplicity, the configuration of elements are written using a noble gas notation, where it consist element symbol of the last noble gas prior the period where the element is located and followed by the configuration of electrons remained.

O configuration in the noble gas notation is [He]2ss2p4

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