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# What is the coordination number of K4(FeCN6)? I know the answer but I don't know how we will get it. Please explain me in detail?

Arun
25763 Points
one year ago

EAN means metal atomic no. Minus oxidation no.of metal atoms plus 2× coordination number,which is equal to next atomic number.

• 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.
Vikas TU
14149 Points
one year ago
Dear student
can be calculated as follows,
4(+1) + x + 6(-1) = 0
Hence x = +2.
K3[Fe(CN)6] , we know that Potassium, K, has an oxidation number of +1

The oxidation number of CN= -1, so 6*CN has an oxidation number of -6 so therefore

Fe - 6 = -3

Fe = -3 + 6 = +3

The oxidation number of Fe is +3