Question
Question: The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of the c...
The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is
A
288 pm
B
398 pm
C
618 pm
D
144 pm
Answer
144 pm
Explanation
Solution
2 × 110 + 2 × r– = 508
2r– = 288
r– = 144 pm