Question
Question: The edge length of sodium chloride unit cell is 546 pm. If the size of \(Cl^{-}\)ion is 181 pm. The ...
The edge length of sodium chloride unit cell is 546 pm. If the size of Cl−ion is 181 pm. The size of Na+ion will be
A
101 pm
B
181 pm
C
410 pm
D
202 pm
Answer
101 pm
Explanation
Solution
2(r++r−)=a
2(rNa+rCl−)=564pm
rNa+=2564−181=101pm