Question

Statement I `[Fe(H_(2)O)_(5)NO]SO_(4)` is paramagnetic
Statement II The Fe in `[Fe(H_(2)O)_(5)NO]SO_(4)` has three unpaired electrons .
A. Statement 1 is true, statement 2 is true, statement 2 is a correct explanation for statement 1
B. Statement 1 is true, statement 2 is true, statement 2 is not a correct explanation for statement 1
C. Statement 1 is true, statement 2 is false
D. Statement 1 is false, statement 2 is true

Answer 1

Correct Answer - C
The compound `overset(+1)("[Fe")(H_(2)O_(5))overset(+1)(NO)"]"SO_(4)` is paramagnetic because Fe atom is in `+1` stage i.e., `d^(7)` configuration having 3 unpaired electron.
`Fe^(+)= 3d^(6)4s^(1)=3d^(7)4s^(0)` ( Due to strong field ligand)