How to Write the Orbital Diagram for Oxygen (O)

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To write the orbital diagram for the Oxygen atom (O) first we need to write the electron configuration for just O. To do that we need to find the number of electrons for the Oxygen atom (there are 8 electrons) using the Periodic Table. When we write the configuration, we'll put all 8 electrons in orbitals around the nucleus of the Oxygen atom.

Either way, the Oxygen electron configuration will be 1s2 2s2 2p4

Once we have this information we can then place electrons in an orbital diagram for Oxygen. Note that we are making the Atomic Orbital Diagram for O (not a molecular orbital diagram).

The configuration notation and atomic orbital diagram provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. This makes it easier to understand and predict how atoms will interact to form chemical bonds.
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Who we know by seeing orbital digrams that a particular atom has vacant orbital or not ??

Shivbhakt-