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Mentallic Gold crystallise in fcc latti...

Mentallic Gold crystallise in fcc lattice and the length of cubic unit cell is 407 pm.
(Given : Atomic mass of Gold =`197 ,N_(A)=6xx10^(23)`)
The density if it have `0.2%` Schottky defect is `(" in gm"//cm^(3))`

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