Gold crystallises in a face centred cubi

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Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solid State

Question:

Gold crystallises in a face centred cubic unit cell. The density of Au is 19.32 g/cc. Caclculate the edge length of the unit cell.

Options:

408 pm

409 pm

409 cm

408 cm

Correct Answer:

408 pm

Explanation:

"Use formula for density of unit cell, for fcc Z=4 [V=Z X M / No X d]"