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STD 11 -p-Block elements - I — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 -p-Block elements - I4 Marks
MCQ
The correct order of atomic radii in group $13$ elements is
  • A
    $\mathrm{B} < \mathrm{Al} < \mathrm{In} < \mathrm{Ga} < \mathrm{Tl}$
  • B
    $\mathrm{B} < \mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{T}$
  • C
    $\mathrm{B} < \mathrm{Ga} < \mathrm{Al} < \mathrm{T}) < \mathrm{In}$
  • ✓
    $\mathrm{B} < \mathrm{Ga} < \mathrm{Al} < \mathrm{In}  < \mathrm{Tl}$ 
✓

Answer

Correct option: D.
$\mathrm{B} < \mathrm{Ga} < \mathrm{Al} < \mathrm{In}  < \mathrm{Tl}$ 
d
In group $13$ due to transition contraction $[Al > Ga]$

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