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Why co ordination number is fixed for a metal? How can we say that primary valencies are ionizable if we take the eg. Of K4[Fe(CN)6]

Arundhati , 8 Years ago
Grade 12
anser 4 Answers
Umakant biswal

Last Activity: 8 Years ago

@ arundhati 
coordination number generally defines the charge on the metal or the no. of nearest neighbours that surrounds the atom . 
so, metals as having solid state doesnot loose or gain electron so easily , in normal state , 
so, in that case we can say that its fixed for a metal . 
HOPE IT CLEARS "
ALL THE BEST ..

Arundhati

Last Activity: 8 Years ago

Werner theory states that every metal cation has a fixed coordination no. But if we consider K4[Fe(CN)6] and [Fe(Cl)4]^-2 the coordination no. of iron in both cases is different?

Ranit Ram

Last Activity: 7 Years ago

According to WernersTheoryoncrdationcompounds,transitionmηlshavetwotypesofvancyt say, the C.N.of a metal is always fixed as in CoCl4(–2), C.N. of Co(II) is 4 while in case of [Co(H2O)6]+3, C.N. of Co(III) is 6 ; again, in case of [Co(CN)5]–2, C.N. of Co(III) is 5... Again, you notice, the primary valency of Co I guess.In case of K4[Fe(CN)6], primary valency of iron is 3, which is its oxidation state (+3) too and this is ionizable valency and C.N. if Fe(III) is 6. Hope it helps...

vignesh s

Last Activity: 5 Years ago

i suggests that coordination number of every element is not fixed it varies with the number of neighbouring atoms it bonded with. 
 

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