Question

Match the following

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

Hint:

When dealing with periodic table elements and their properties, remember to check the periodic trends like metallic radii, which generally increase down a group.

Answer 1

The Correct Option is B

The correct matching of elements from Group 13 with their respective metallic radii is as follows:
- \( \text{Al} \) (Aluminium) has a metallic radius of \( 135 \, \text{pm} \), so A-I.
- \( \text{Ga} \) (Gallium) has a metallic radius of \( 143 \, \text{pm} \), so B-II.
- \( \text{In} \) (Indium) has a metallic radius of \( 170 \, \text{pm} \), so C-IV.
- \( \text{Tl} \) (Thallium) has a metallic radius of \( 167 \, \text{pm} \), so D-III.
Thus, the correct match is \( \boxed{\text{A-I, B-II, C-IV, D-III}} \).

Answer 2

Step 1: Understand metallic radii trends in Group 13.
In Group 13 elements (Al, Ga, In, Tl), metallic radii generally increase down the group due to the addition of electron shells.
However, there can be slight irregularities due to electronic configurations and shielding effects.

Step 2: Analyze the metallic radii of each element.
- Aluminium (Al) has a metallic radius of \(135 \, \text{pm}\).
- Gallium (Ga) has a metallic radius of \(143 \, \text{pm}\).
- Indium (In) has a metallic radius of \(170 \, \text{pm}\).
- Thallium (Tl) has a metallic radius of \(167 \, \text{pm}\).

Step 3: Match each element with its correct radius label.
- \( \text{Al} \) corresponds to A-I.
- \( \text{Ga} \) corresponds to B-II.
- \( \text{In} \) corresponds to C-IV.
- \( \text{Tl} \) corresponds to D-III.

Step 4: Conclusion.
Thus, the correct matching is:
\[ \boxed{\text{A-I, B-II, C-IV, D-III}}. \]