Which of the following orders is not correct against the given property

Which of the following orders is not correct against the given property
  1. $\mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl} \lt \mathrm{A} 1 \lt \mathrm{B}$ - melting point
  2. $\mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl} \lt \mathrm{B}$ - Electronegativity
  3. $\mathrm{B} \lt \mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}-$ density
  4. $\mathrm{B} \lt \mathrm{Al} \lt \mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}$-atomic radius

Solution

Atomic radius of gallium is less than aluminium.
Correct order : $\mathrm{B} \lt \mathrm{Al}\gt\mathrm{Ga} \lt \mathrm{In} \lt \mathrm{Tl}$

Asked in: AP EAMCET 2024 (20 May Shift 2)

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