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JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Question Bank Topic Test - Solid State

  • question_answer
    Match the type of packing given in Column-I with the items given in Column-II.
    Column-I Column-II
    [a] Square close packing two dimensions (1) Triangular voids
    [b] Hexagonal close packing in two dimensions (2) Pattern of sphere is repeated in every fourth layer.
    [c] Hexagonal close packing in three dimensions (3) Coordination number 4
    [d] Cubic close packing in three dimensions (4) Pattern of sphere is repeated in alternate layers.

    A) A-3, B-1, C-4, D-2

    B) A-1, B-2, C-3, D-4

    C) A-3, B-2, C-1, D-4

    D) A-4, B-3, C-2, D-1

    Correct Answer: A

    Solution :

    [a] Coordination number is 4 in square close packing in two dimensions. Two dimensional hexagonal close packing contains triangular voids. Three dimensional hexagonal close packing have ABAB ...... arrangement whereas ccp have ABCAABC ... type arrangement.


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