CBSE 2022 · Region 3 · Set 3 · Q10 · 3 marks

(a)

Using valence bond theory, predict the hybridization and magnetic character of the complex :

(a)

$\displaystyle \left[\mathrm{Ni}(\mathrm{CO})_{4}\right]$ (Atomic number : $\displaystyle \mathrm{Ni}=28$ )

(b)

Write IUPAC name of $\displaystyle \left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right]$.

(c)

Why $\displaystyle \left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$ is a more stable complex than $\displaystyle \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+} ? \quad$

CBSE Class 12 Chemistry past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.