sp3 hybridization

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Nikita Patra 3J
Posts: 50
Joined: Sat Jul 20, 2019 12:16 am

sp3 hybridization

Postby Nikita Patra 3J » Sun Nov 24, 2019 1:41 pm

How is sp3 hybridization energetically favorable for the atom if it involves the promotion of an electron from a lower energy s orbital to a higher energy sp3 hybridized orbital?

Christine Honda 2I
Posts: 116
Joined: Sat Sep 14, 2019 12:17 am

Re: sp3 hybridization

Postby Christine Honda 2I » Sun Nov 24, 2019 1:48 pm

The characteristic tetravalence of carbon is due to the small promotion energy of a carbon atom. This energy is small because a 2s-electron is transferred from an orbital that it shares with another electron to an empty 2p-orbital. Although the promoted electron enters an orbital of higher energy, it experiences less repulsion from other electrons than before it was promoted. As a result, only a little energy is needed to promote the electron.

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