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The pyknometric den sity of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal is
  • a)
    5.96 × 10–3
  • b)
    5.96
  • c)
    5.96 × 10–2
  • d)
    5.96 × 10–1
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The pyknometric den sity of sodium chloride crystal is 2.165 × 1...
pyknometric density:-

Pyknometric density is the closest approximation to true density calculated from the molecular weight and crystalline lattice of a substance.

First density = 2.165 * 10 ^3

Difference of density = 2178-2165 = 13 kg/m 3

Therefore,

fraction of unoccupied site = 13/2178 = 5.96 * 10 -3
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Fraction of unoccupied sites in NaCl crystal
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The pyknometric den sity of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal isa)5.96 × 10–3b)5.96c)5.96 × 10–2d)5.96 × 10–1Correct answer is option 'A'. Can you explain this answer?
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The pyknometric den sity of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal isa)5.96 × 10–3b)5.96c)5.96 × 10–2d)5.96 × 10–1Correct answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The pyknometric den sity of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal isa)5.96 × 10–3b)5.96c)5.96 × 10–2d)5.96 × 10–1Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The pyknometric den sity of sodium chloride crystal is 2.165 × 103 kg m–3 while its X-ray density is 2.178 × 103 kg m–3. The fraction of unoccupied sites in sodium chloride crystal isa)5.96 × 10–3b)5.96c)5.96 × 10–2d)5.96 × 10–1Correct answer is option 'A'. Can you explain this answer?.
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