Question

Spot the incorrect order of atomic
radii
(A) rcu>ZI
(B) rc>
HG
(C) rp>$
(D) rsc>Ti​

Answer 1

Answer:

D is the answer

Explanation:

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Answer 2

Answer:

(A)  $r_{Cu} < r_{Zn}$

Explanation:

The correct options in the question are :

(A) $r_{Cu} > r_{Zn}$

(B) $r_{Cl} < r_{F}$

(C)  $r_P < r_S$

(D) $r_{Sc} < r_{Ti}$

Zn has a $3d^{10}$ configuration, whereas Cu has a $3d^9$ configuration, hence it has a larger covalent size.

Therefore, the size is less contracted because there will be more screening effect as there are more d electrons, which will result in less nuclear attraction for the outer 4s orbital electrons.

Due to fewer d electrons, Cu will have a higher effective nuclear charge. Therefore, a smaller covalent radius than Zn is produced by Cu due to a lessened screening effect, which increases nuclear charge effectiveness.

Hence, Option A is incorrect.

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