ChemistryInorganic: Coordination Compounds

Assertion: [Fe(H2O)5NO]SO4 is paramagnetic.Reason: The Fe in [Fe(H2O)…

Assertion: [Fe(H₂O)₅NO]SO₄ is paramagnetic.
Reason: The Fe in [Fe(H₂O)₅NO]SO₄ has three unpaired electrons.

Answer & explanation

Correct answer: option 1

[Fe(H₂O)₅NO]SO₄→ [Fe(H2O)₅NO]²⁺ + SO₄^2-

[Fe(H₂O)₅NO]²⁺

x + 5(0) + 1 = 2

x = 2 -1 = 1

₂₆Fe : [Ar]4s²3d⁶

Fe⁺ : [Ar]4s¹3d⁶

N O^{+}

causes pairing of

4 s

electron inside.

Thus, the configuration is

3 d^{7}

and the number of unpaired electrons is

3