HF MO: Why F Uses 2P for Bonding in HF Molecular Orbital Model

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r12214001
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Homework Statement
HF molecular orbital
Relevant Equations
HF molecular orbital
In figure. Why F use 2P rather than 2S to bonding in HF MO model.
圖片2.png
 
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Borek said:
What is the electron configuration of a free F atom?
1S2 2S2 2P5
 
Can you bond using suborbitals that are already filled?
 
chemisttree said:
Can you bond using suborbitals that are already filled?
OK i get it. I should never use hybridization to account for MO theory.
But wait . F become SP3 hybridization when bonding. Please tell me!
Which orbital does the bonding electron lie in F atom, SP3 or P orbital?