NEET Chemistry NEET PYQ-The Solid State

  • question_answer
    Schottky defect in crystals is observed when: [AIPMT 1998]

    A) an ion leaves its normal site and occupies an interstitial site

    B) unequal number of cations and anions are missing from the lattice

    C) density of the crystal is increased

    D) equal number of cations and anions are missing from the lattice

    Correct Answer: D

    Solution :

    [d] Schottky defect in crystals is observed when equal number of cations and anions are missing from the lattice. So, the crystal remains neutral e.g., \[NaCl\]and the density of the crystal decreases.


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