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Chemical Bonding and Molecular Structure

Short Answer Type

91.

What is molecular orbital?

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92.

What is a bonding molecular orbital?

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93.

What is an antibonding molecular orbital?

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94.

Name the molecular orbitals formed by the combination of two atomic orbitals.

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95.

How many molecular orbitals (M.O’s) of H₂ can be formed from the hydrogen Is atomic orbitals?

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96.

What type of atomic orbital can overlap to form molecular orbitals?

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97.

How is bonding molecular orbital in a molecule of hydrogen different from its antibonding molecular orbtial?

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98.

What is meant by bond order?

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99. How do you express the bond length is terms of bond order?

In a molecule as we increase the number of electrons shared between two atoms, there will be an increase in bond order, also there will be an increase in the strength of the bond, and decrease the distance between nuclei. For example,

Bond	No. of electron	Bond order	Bond strength	Bond Length
Single	2	1	Weakest	Longest
Double	4	2	-	-
Triple	6	3	Strongest	Shortest

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100.

How is stability related to bond order?

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