Question

Question 4.9 How do you express the bond strength in terms of bond order?

Class XI Chemical Bonding and Molecular Structure Page 130

Answer 1

first of all we have to know about 'Bond order'
Bond order : In Lewis representation of a molecule or ion, the number of bonds present between two atoms is called Bond order .
example :- N Ξ N ( N2) have 3 bond so, Bond order = 3

we also know,
bond order is directly proportional to bond enthalpy. and bond enthalpy is directly proportional to bond strength.
it means bond order is directly proportional to bond strength.

example :- bond order of O2 = 2 [ 0 = 0 ]
bond order of N2 = 3 [ N Ξ N ]
here,
bond order of O2 < bond order of N2
so, bond strength of N2 > bond strength of O2.

hence, you can easily know which compound has more bond strength by using bond order.

Answer 2

Answer:

first of all we have to know about 'Bond order'

Bond order : In Lewis representation of a molecule or ion, the number of bonds present between two atoms is called Bond order .

example :- N Ξ N ( N2) have 3 bond so, Bond order = 3

we also know,

bond order is directly proportional to bond enthalpy. and bond enthalpy is directly proportional to bond strength.

it means bond order is directly proportional to bond strength.

example :- bond order of O2 = 2 [ 0 = 0 ]

bond order of N2 = 3 [ N Ξ N ]

here,

bond order of O2 < bond order of N2

so, bond strength of N2 > bond strength of O2.

hence, you can easily know which compound has more bond strength by using bond order.

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