D-And F-Block Elements Ques 254
Question: In nitroprusside ion, the iron and $ NO $ exist as $ Fe^{II} $ and $ N{{O}^{+}} $ rather than $ Fe^{III} $ and $ NO $ . These forms can be differentiated by
[IIT-JEE 1998]
Options:
A) Estimating the concentration of iron
B) Measuring the concentration of $ C{{N}^{-}} $
C) Measuring the solid state magnetic moment
D) Thermally decomposing the compound
Show Answer
Answer:
Correct Answer: C
Solution:
The existence of $ F{{e}^{2+}} $ and $ N{{O}^{+}} $ in Ntroprusside ion $ {{[Fe{{(CN)}_5}NO]}^{2-}} $ can be established by measuring the magnetic moment of the solid compound which should correspond to $ (F{{e}^{2+}}=3d^{6}) $ four unpaired electrons.
