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Question

Which one of the following does not follow EAN rule?


A
Fe(CO)5
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B
V(CO)6
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C
K4[Fe(CN)6]
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D
Mn2(CO)10
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Solution

The correct option is C $$V(CO)_{6}$$
For $$Fe(CO)_5$$, $$EAN=26-0+10=36$$. Thus, it follows EAN rule.
For $$V(CO)_6$$, $$EAN=23-0+12=35$$. Thus, it does not follow EAN rule.
For $$K_4[Fe(CN)_6]$$, $$EAN=26-2+12=36$$. Thus, it follows EAN rule.
For $$Mn_2(CO)_{10}$$, $$EAN=25+1+10=36$$. Thus, it follows EAN rule.

Chemistry

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