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How many of the given complexes follow E...

How many of the given complexes follow E.A.N rule ?
(a) `[Fe(CO)_(5)]` (b) `[Co_(2)(CO)_(8)]` ( c) `[Fe(C_(5)H_(5))_(2)]` (d) `K_(3)[Fe(CN)_(6)]` ( e)`[Fe(NO)_(2)9CO)_(2)]` (f)`[CoF_(6)]^(4-)`

Text Solution

Verified by Experts

The correct Answer is:
4(a,b,c,e)
(d) `K_(3)[Fe(CN)_(6)]=26-3+2xx6=35` does not follow E.A.N. rule.
(f) `[CoF_(6)]^(4-)=27-2+2xx6=37` does not follow E.A.N. rule.
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Calculate the EAN of central atom in the following complexes (a) [Fe(CO)_(2)(NO)_(2)] " " (b) [Fe(C_(5)H_(5))_(2)]

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  • K_(3)[Fe(CN)_(6)]+FeCl_(2) to Fe_(3)[Fe(CN)_(6)]_(2)darr

    A
    For coloured ppt./Black ppt
    B
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    C
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    D
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  • K_(3)[Fe(CN)_(6)]+FeCl_(2) to Fe_(3)[Fe(CN)_(6)]_(2)darr

    A
    For coloured ppt./Black ppt
    B
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    C
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    D
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  • The realtive stabilities of metal carbonyls and their ions can be explained on the basis of a rule which is known as 18e^(-) rule. If number of valence shell electrons of the metal + number of electrons donated by bonded CO groups comes to be 18 electrons, then carbonyl is said to be stable. Some heteroleptic/noncarbonyl complexes also follow 18 electron rule. Identify the number of complexes following the rule. [Mn(CO)_(5)], [Co(CO)_(4)] [(eta^(5)-C_(5)H_(5))_(2)Fe] , [(CO)_(5)(PF_(3))]^(+), [(eta^(5)-C_(5)H_(5)) [Cr(NO)_(4)], Fe(CO)_(2)Cl] , [Fe(CO)_(2)(NO)_(2)], [Fe(CO)_(5)], [Mn_(2)(CO)_(10)]

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