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Question
Which of the following do NOT obey EAN rule?
[Fe (Z = 26), Cr (Z = 24)]
Options
Fe(CO)5
[Fe(CN)6]3−
Cr(CO)6
[Fe(CN)6]4−
MCQ
Solution
[Fe(CN)6]3−
Explanation:
EAN of [Fe(CN)6]3− = 26 − 3 + 12 = 35
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Effective Atomic Number (EAN) Rule
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