In group 13 of the long form of periodic table an element $\mathrm{X}$ has a boiling point of $\mathrm{T}_2(\mathrm{~K})$ and melting point of $\mathrm{T}_1(\mathrm{~K})$. Identify the element $\mathrm{X}$ for which $\mathrm{T}_2-\mathrm{T}_1(\mathrm{~K})$ is maximum

• A

  $\mathrm{Al}$
• Correct answer
  B

  $\mathrm{Ga}$
• C

  $\mathrm{In}$
• D

  $\mathrm{B}$

Solution

Thus, the highest gap $T_2-T_1$ will be for $G a$.

Hence, the correct answer is option: 'B'.