Gold crystallises in ccp structure. The total number of voids present in 197 g of gold will be________.

197 \times N_{A}

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2 N_{A}

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3 N_{A}

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4 \times 197 N_{A}

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Solution

The correct option is A $3 N_{A}$
$W e i g h t o f g o l d = 197 g m o l e c u l a r m a s s o f g o l d = 197 g N o o f a t o m s o f g o l d = \frac{w t . o f g o l d}{m o l . m a s s o f g o l d} \times N_{A} = N_{A} I n C C P, t h e r e a r e 2 N_{A} t e t r a h e d r a l v o i d s a n d N_{A} O c t a h e d r a l v o i d s h e n c e t o t a l n o . o f v o i d s = 3 N_{A} = 3 N_{A}$

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Similar questions

Gold crystallises in CCP structure. What is the total number of voids present in 197g of gold.

197 g m o l^{- 1}

19.3

^{- 3}

= 197

^{- 1}

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