Question

Number of antibonding electrons in NO and CO according to molecular orbital theory are respectively?

Answer 1

According to M.O.theory, the number of anti-bonding electrons in CO molecules is four.Hence (c) is the correct answer.


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Answer 2

Number of antibonding electrons in NO and CO according to molecular orbital theory are respectively 5 and 4.

Explanation:

According to molecular orbital theory

(i) NO -It has 15 electrons where 7 from nitrogen and 6 from oxygen

Number of electrons present in the bonding orbital are 10 and number of electrons in the antibonding orbitals are 5.

Bond order is evaluated with the help of this formula here$Bond Order = 1/2 [ Number of Bonding Orbital Electrons - Number of Non Bonding Electrons ]$here the bond order is $2.5$

(ii) CO-It has 14 electrons where 6 from Carbon and 8 from oxygen

Number of electrons present in the bonding orbital are 10 and number of electrons in the antibonding orbitals are 4.

here the bond order is 3