Which of the following is/are true about A', B', C' and D'?

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Solution

Q.
Consider the following elements.

$Group ↓_{C' D'}^{A' B' \to Period}$

Which of the following is/are true about A', B', C' and D'

A. Order of atomic radii: B' < A' < D' < C'

B. Order of metallic character: B' < A' < D' < C'

C. Size of the element: D' < C' < B' < A'

D. Order of ionic radii: $B'^{+} < A'^{+} < D'^{+} < C'^{+}$

Choose the correct answer from the options given below: [2024]

1 B, C and D only

2 A and B only

3 A, B and D only

4 A only

Ans.
(3)

Atomic and metallic radii decreases from left to right across a period and increase down the group. The same trend is followed by metallic character.

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