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Is there any short cut to calculate bond order of compounds?(apart from molecular orbital Theory)

Is there any short cut to calculate bond order of compounds?(apart from molecular orbital Theory)

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1 Answers

Arun
25750 Points
5 years ago
Disclaimer: this trick only works for small molecules having small atomic no.

Firstly, learn this table
 

No. Of electrons.      Bond order

10                                      1
11.                                     1.5
12.                                     2
13.                                     2.5
14.                                     3
15.                                     2.5
16.                                     2
17.                                     1.5
18.                                     1


Now that you have learned this table, it becomes really easy to calculate bond order.
For eg: you have to calculate the bond order of N2 molecule.
N Has 7 electrons in total, so N2 has 14 electrons . Hence according to the table its bond order is 3
 Another eg: CO molecule
C has 6 electrons and O has 8 electrons so CO has 14 electrons in total . Hence the bond order is 3.

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