Question

Match List I with List IIList-I	List-II
A. Melting point [K]	I. Tl > In > Ga > Al > B
B. Ionic Radius [M3/pm]	II. B > Tl > Al ≈ Ga ≈ In
C. ΔiH1 [kJ mol-1]	III. Tl > In > Al > Ga > B
D. Atomic Radius [pm]	IV. B > Al > Tl > In > Ga

Choose the correct answer from the options given below:

• A. A-III, B-IV, C-I, D-II
• B. A-II, B-III, C-IV, D-I
• C. A-IV, B-I, C-II, D-III
• D. A-I, B-II, C-III, D-IV

Answer 1

Answer: (C)

A-IV, B-I, C-II, D-III

Answer 2

To match the items from List I with List II:
A. Melting point [K] : Based on the trend, Tl > In > Ga > Al > B. (Matches I).
B. Ionic Radius [M$^{+3}$/pm] : Boron has the smallest ionic size, followed by Tl > Al $\approx$ Ga > In (Matches II).
C. $\Delta_i H_1$ [kJ mol$^{-1}$] : Ionization enthalpy follows the trend Tl > In > Al > Ga > B.(Matches III).
D. Atomic Radius [pm] : Atomic radius increases as B > Al > Tl > In > Ga.(Matches IV).
Correct Answer: (3)