IIT JAM
   Top Resources
profile-img
Imdadul Haque posted an Question
September 17, 2020 • 05:36 am 30 points
  • IIT JAM
  • Chemistry (CY)

20. nacl, kci, nabr and kbr erystalline in fc lattices. their anion and cation touch along the edge of unit cell. the dimensions of their unit cells are 562.8 p

20. NaCl, KCI, NaBr and KBr erystalline in FC lattices. Their anion and cation touch along the edge of unit cell. The dimensions of their unit cells are 562.8 pm, 627.7 pm, 596.2 pm, and 658.6 pm, respectively. From these data, what can you say about the size of the ionic radii (within an error of about 5%)? (a) lonic radii of the cations depend on the nature of the anions (b) lonic radii of the anions depend on the nature of the cations. (c) Both (a) and (b) (d) lonic radii are independent of the counter ions. A solid consisting of only X atoms has a close-packed structure with X-X distance of 160 pm. Assuming it to be a closed-packed structure of hard spheres with radius equal to half of the X-X bond length, the number of atoms in 1 cm would be: . (a) 6.023 x 10 (b) 3.45 x 10 (C) 6.02 x 10 (d) 3.8 x 10

1 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • comment-profile-img>
    Priyanshu kumar

    For 20 Option C are correct

    eduncle-logo-app

    Option C is correct As they both depends on each other. The nature of alkali metal and the halogen both plays a equal parts in deciding the ionic radii

    eduncle-logo-app

    you can find also and check

    eduncle-logo-app

    see radius data

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers

Sign Up to Download FREE Study Material Worth Rs. 500/-