Question
Asked Nov 18, 2019
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Each pictured Lewis structure is invalid. Identify the error in each case.

 

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Each pictured Lewis structure is invalid. Identify the error in each case.
-N-
:F
F:
Answer Bank
octet-rule violation
wrong electron total
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Each pictured Lewis structure is invalid. Identify the error in each case. -N- :F F: Answer Bank octet-rule violation wrong electron total

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Expert Answer

Step 1

(i)

 

The first Lewis structure shows that carbon contains 4 non-bonding electrons and 4 bonding electrons which is wrong because carbon has 4 electrons in its outermost shell due to which it can form 4 bonds in order to complete its octet of 8 electrons. Therefore, the first Lewis structure is wrong due to wrong electron total.

The correct Lewis structure of carbon dioxide molecule is,

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Step 2

(ii)

 

The second Lewis structure shows 4 bonds around one oxygen atom which is wrong because oxygen has 6 electrons in its outermost shell and it can form 2 bonds in order to complete its octet of 8 electrons. Therefore, the second structure is wrong due to octet rule violation.

The correct Lewis structure of OF2 molecule is,

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Step 3

(iii)

 

The third Lewis structure shows that fluorine contains 6 non-bonding electrons and 2 bonding electrons which is wrong because fluorine has 7 electrons in its outermost shell due to which it can form ...

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