What type of crystal defect is shown in the figure given below ?
`{:(Na^(+),Cl^(-),Na^(+),Cl^(-),Na^(+)),(Cl^(-),square,Cl^(-), Na^(+), Cl^(-)),(Na^(+), Cl^(-),Na^(+),square,Na^(+)),(Cl^(-),Na^(+),square,Na^(+),Cl^(-)),(Na^(+),Cl^(-),Na^(+),Cl^(-),square):}`

Options

A. Both Frenkel and Schottky defects
B. Schottky defect
C. Interstitial defect
D. Frenkel defect

Answer

B

Explanation

Since equal number of cations (`2 Na^(o+)` ions) and anions (`2 Cl^(ɵ)` iions) are missing in the figure given, So it is Schottky defect.