Linear combination of atomic orbital, Molecular orbital theory, Difference between bonding & anti bonding moleculer orbital.
Linea combination of atomic orbital
molecular orbital are formed by combination of atomic orbital if ꌏ(A) andꌏ(B) are the wave function of atomic orbital of two combining atomic A and B then according to Linea combination of atomic orbital, these two wave function can be added or can be substracted .that means there are two modes of interaction (symmetric and antisymmetric)
We know
ꌏ(s) = ꌏ(A) +ꌏ(B)
ꌏ(a) = ꌏ(A)- ꌏ(B)
ꌏ(s) and ꌏ(a) represent wave function of bonding and antibonding moleculer orbital.
the formation of moleculer orbital ꌏ(s) and
ꌏ(a) from two atomic orbital ꌏ(A) and ꌏ(B) is represented as
Molecular orbital theory (MO) theory:
main points of mo theory are:
1.whwn atomic orbital combine they formed molecular orbital.
2.Number of molecular orbital formed is equal to number of atomic orbital combine.
3.atomic orbital are uninuclear while molecular orbital are polynuclear.
4.The various molecular orbital are arranged in order of in increasing energy.
5.molecular orbital are designed as ؎ and π.
when atomic orbital combine they give rise to molecular orbital .the M. O are two types:
1.Bonding molecular orbital.
2.antiBondingmolecular orbital.
The molecular orbital formed by additive method, are called Bonding molecular orbital .The molecular orbital formed by susbsration method are called antibonding molecular orbital.
Difference between B.M.O and A. B. M. O
Bonding molecular orbital:
1.they formed by addition method.
ꌏ(s) = ꌏ(A) +ꌏ(B)
molecular orbital are formed by combination of atomic orbital if ꌏ(A) andꌏ(B) are the wave function of atomic orbital of two combining atomic A and B then according to Linea combination of atomic orbital, these two wave function can be added or can be substracted .that means there are two modes of interaction (symmetric and antisymmetric)
We know
ꌏ(s) = ꌏ(A) +ꌏ(B)
ꌏ(a) = ꌏ(A)- ꌏ(B)
ꌏ(s) and ꌏ(a) represent wave function of bonding and antibonding moleculer orbital.
the formation of moleculer orbital ꌏ(s) and
ꌏ(a) from two atomic orbital ꌏ(A) and ꌏ(B) is represented as
main points of mo theory are:
1.whwn atomic orbital combine they formed molecular orbital.
2.Number of molecular orbital formed is equal to number of atomic orbital combine.
3.atomic orbital are uninuclear while molecular orbital are polynuclear.
4.The various molecular orbital are arranged in order of in increasing energy.
5.molecular orbital are designed as ؎ and π.
when atomic orbital combine they give rise to molecular orbital .the M. O are two types:
1.Bonding molecular orbital.
2.antiBondingmolecular orbital.
The molecular orbital formed by additive method, are called Bonding molecular orbital .The molecular orbital formed by susbsration method are called antibonding molecular orbital.
Difference between B.M.O and A. B. M. O
Bonding molecular orbital:
1.they formed by addition method.
ꌏ(s) = ꌏ(A) +ꌏ(B)
2 they are formed when lobes of combining atomic orbital lie in same plane.
3.The electron present in bonding molecular orbital contribute to attraction.
4.Because of attraction forces, bonding molecular orbital are of lower energy
Antibonding molecular orbital:
1.they formed by substration method.
ꌏ(s) = ꌏ(A) -ꌏ(B)
ꌏ(s) = ꌏ(A) -ꌏ(B)
2 they are formed when lobes of combining atomic orbital lie in different plane.
3.The electron present in bonding molecular orbital contribute to repulsion.
4.Because of attraction forces, bonding molecular orbital are of higher energy.
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