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Question: Answered & Verified by Expert
The number of unit cells present in 1 g cube shaped ideal crystal of solid A+B- (with CCP close packing) (formula mass =60 ) are
ChemistrySolid StateJEE Main
Options:
  • A 2.5×1021
  • B 6.02×1023
  • C 4.0×1022
  • D 1.0×1022
Solution:
2281 Upvotes Verified Answer
The correct answer is: 2.5×1021
Number of moles present in 1g=160

So number of formula units in 160 moles

=160×6.023×1023=1022=10×1021

Since 4 formula units constitute a unit cell

So number of unit cells present

=104×1021=2.5×1021

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