Question

Assertion :$\left[Fe\right(H_{2}O{)}_6{]}^{2+}$ is $s{p}^3{d}^2$ hybridised and paramagnetic complex ion. Reason: $\left[Fe\right(H_{2}O{)}_6{]}^{2+}$ has four unpaired electrons as $H_{2}O$ is a weak field ligand.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

$\left[Fe\right(H_{2}O{)}_6{]}^{2+}\Rightarrow F{e}^{2+}\Rightarrow \left[Ar\right]3d^6\Rightarrow$ Refer to image.

$H_{2}O\Rightarrow$ Weak filed ligand.

4 Unpaired electrons due to weak field ligands.

Both assertion and reason are correct and reasons is correct explanation for assertion.