Question

In K₄[Fe(CN)₆], the E.A.N. of Fe is
(a) 33
(b) 35
(c) 36
(d) 26

Answer 1

In k4(fe(cn)6) , central atom Fe. I..e, 26.

Oxidation no.=4(x(-1)6) =2

So Fe is +2

Coordination no=2×6 =12

Then EAN =26–2×12 =36

36 is stable configuration.

Answer 2

Central atom is Fe i.e...26

Oxidation number is 4×(x)(-1)(6) =2

So Fe is in +2

Coordination number is 2×6=12

Then EAN = 26-2×12 =36

36 is stable configuration