Interpretation:
The Lewis dot structure of per chlorate ion,
Concept introduction:
For drawing Lewis structure one should know the formula of formal charge atom.
This is represented as follows:
Formal charge

Explanation of Solution
Number of valence electron on
Number of valence electron on
Total number of valence electron on
Now, Cl forms double bond with 3 O atoms which results in zero lone pair of Cl and 2 lome pairs on each O atoms. It forms one single bond with 1 oxygen atom which results in the formation of negative charge on it. This is in conjugation with all the oxygen atoms. Also, the O atom with negative charge has 3 lone pair of electrons. Thus, the structure is represented as follows:
Now octet is satisfied for each atom but one has to adjust the formal charge.
Formal charge of chlorine
Formal charge of all
Lone pair on chlorine
Bonding electron for chlorine
Lone pair on oxygen
Bonding electron for oxygen
Now to adjust and reduce formal charge of chlorine,
Chapter 8 Solutions
Chemistry: Matter and Change
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