AP EAMCET · Chemistry · p Block Elements (Group 13 & 14)
Match the following
\begin{array}{llll}
& List I & & List II \\
& (Group 13 element) & & (metallic radius, pm) \\
A & \mathrm{Al} & I & 135 \\
\mathrm{~B} & \mathrm{Ga} & II & 143 \\
\mathrm{C} & In & III & 170 \\
\mathrm{D} & \mathrm{Tl} & IV & 167
\end{array}
The correct answer is
- A A-I, B-II, C-IV, D-III
- B A-II, B-I, C-IV, D-III
- C A-III, B-IV, C-II, D-I
- D A-II, B-I, C-III, D-IV
Answer & Solution
Correct Answer
(B) A-II, B-I, C-IV, D-III
Step-by-step Solution
Detailed explanation
The atomic radii or metallic radii of elements increases down the group due to increasing shells with the exception of Gallium \((\mathrm{Ga})\) in the \(13^{\text {th }}\) group. This is due to the presence of d-subshell that offers poorer shielding of the outermost…
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