IIT JAM
Komal ojha Asked a Question
July 29, 2020 3:41 pmpts 30 pts
  • IIT JAM
  • Chemistry (CY)

Please explain this question

please explain this question of crystal lattice of this type of question
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  • Priyanshu kumar
    check this it helps
    • cropped1654171442002075499.jpg
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    Priyanshu kumar
    got it??
  • Priyanshu kumar thankyou
    It is given that NH4Cl crystallises in Bcc cubic lattice and you know oppositely charged touch each other along the body diagonal...So you can proceed with this formula
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  • Komal ojha
    but the question is saying that distance between two opp.ions
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    Priyanshu kumar
    yes komal see the attached image...2(r+ +r-) = root 3 a...so from this you can easily find
  • Dinesh khalmaniya
    hope this will help you 🙏🙏
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  • Dinesh khalmaniya
    check the solution
    • cropped6252220558554139547.jpg
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  • Dinesh khalmaniya
    yes, NH4Cl is an example of NaCl but here already mentioned that it is BCC so we will use BCC i.e, 4r =√2a formula
    Likes(0) Reply(1)
    Dinesh khalmaniya
    please accept the answer if you got it 🙏🙏
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