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What is the effect of mixing of orbitals on the energy of the  \mathrm{\sigma 2 s} and \mathrm{ \sigma 2 p_z} orbitals? 

Option: 1

Mixing of orbitals lowers the energy of the \sigma 2 \mathrm{s} orbital and increases the energy of the \sigma 2 p_z orbitals.
 


Option: 2

Mixing of orbitals raises the energy of the \sigma 2 \mathrm{~s} orbital and lowers the energy of the \sigma 2 p_z orbitals.
 


Option: 3

Mixing of orbitals has no effect on the energy of the \sigma 2 \mathrm{~s} and \sigma 2 \mathrm{p}_z orbitals.
 


Option: 4

Mixing of orbitals can either raise or lower the energy of the \sigma 2 s and \sigma 2 p_z orbitals, depending on the specific molecule.


Answers (1)

best_answer

This is because the \sigma 2 s orbital is more compatible with the s orbital of the other boron atom, while the \sigma 2 p_z orbital is more compatible with the p orbital of the other boron atom. This means that the mixing of orbitals lowers the energy of the \sigma 2 \mathrm{~s} orbital and increases the energy of the \sigma 2 p_z orbitals.

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Divya Prakash Singh

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