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))`
A
`4.86`
B
`9.72`
C
`19.48`
D
`19.44`
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The correct Answer is:
D
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