Na= Nb wat is the stability in MOT?

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Solution

1) Bond order :
It is defined as the number of covalent bonds between the two combining atoms of a molecule.

Bond order = 0.5 (Nb – Na)

Nb = number of bonding electrons or number of electrons in bonding M.O’s

Na = number of antibonding electrons

2) Stability of molecule :
It is determined by bond order.Higher is the bond order greater is the stability of the molecule.

i) If Nb > Na, then molecule will be stable.

ii) If Nb=Na, then the formation of the molecule will not take place.

iii) If Nb< Na, then molecule will be unstable

When Nb= Na, then the bond order will be zero. Thus, Molecule will have zero stability

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