Chemistry Practice Problems Heteronuclear Diatomic Molecules Practice Problems Solution: Complete this molecular orbital diagram for CN– th...

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Solution: Complete this molecular orbital diagram for CN– then determine the bond order. Note that the 1s orbital is not shown in this problem.

Problem

Complete this molecular orbital diagram for CN then determine the bond order. Note that the 1s orbital is not shown in this problem.

Solution

We’re being asked to complete the molecular orbital diagram of CN- and then determine the bond order.


To do so, we shall follow these steps:

Step 1: Calculate the total valence electrons present.
Step 2: Fill the molecular orbitals with electrons.

Step 3: Determine the bond order. 


Step 1: Calculate the total valence electrons present.

          Group             Valence Electrons
 C         4A                   1 x 4 e- = 4 e-
 N         5A                   1 x 5 e- = 5 e-

From -1 charge:                       +1 e-

 __________________________________
                                Total: 10 valence e-


Step 2Fill the molecular orbitals with electrons.

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Solved • Thu Mar 22 2018 10:54:49 GMT-0400 (EDT)