Question

Crystal radius ofthree ions have 100 pm, 81 pm
and 75 pm respectively. If all the three atoms
have same number of protons, then select the
CORRECT statement.
(A) All the three ions are isoelectronic
(B) All the three ions have same charge
(C) All the three ions have different charge but
metal is same
(D) Allare correct.​

Answer 1

The  CORRECT statement is:

(C) All the three ions have different charge but  metal is same .

- Since the no of protons is same, it means that the metal is same.

- Now, the ionic radii is different for all the three ions.

- It shows that the ions carry different charges.

- Due to different charges, the interactive forces differ and hence the size.

- So, the metal is same but the charges are different.