Question

Match the following characteristics of transition metals given in Column I with the examples listed in Column II:

• A. \( W = B, \, X = C, \, Y = D, \, Z = A \)
• B. \( W = C, \, X = D, \, Y = A, \, Z = B \)
• C. \( W = C, \, X = A, \, Y = D, \, Z = B \)
• D. \( W = A, \, X = D, \, Y = C, \, Z = B \)

Hint:

When studying transition metals, remember that the inert pair effect often makes the lower oxidation state more stable, while higher oxidation states are more stable in compounds with elements like Ti and Mo.

Answer 1

The Correct Option is C

We will now match the characteristics from Column I with the examples in Column II:
W: Chemically inert, non-stoichiometric compound:
\text{WO}_3 (Tungsten oxide) is a chemically inert compound, so W matches with (A)
X: Higher oxidation states are more stable:
\text{TiCl}_4 (Titanium tetrachloride) is an example where Titanium exhibits a +4 oxidation state, which is more stable. Thus, X matches with (B)
Y: Due to inert pair effect, lower oxidation state is more stable:
\text{SnCl}_2 (Tin(II) chloride) is an example where Tin in the +2 oxidation state is more stable due to the inert pair effect. Therefore, Y matches with (D)
Z: Colourless compound of transition metal:
\text{Mn}_4 \text{N} (Manganese nitride) is a colourless compoun(D) Thus, Z matches with (C)
Conclusion:
The correct matching is: W = A, X = B, Y = D, Z = (C)