What type of crystal defect is shown in ...

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):}`

A

Interstitial defects

B

Schottky defect

C

Frenkel defect

D

Both Frenkel & Schottky defects

Verified by Experts

The correct Answer is:

B

Schottky defects because equal number of cations `(Na^(+))` and anions `(Cl^(-))` are missing from the lattice

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