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X-ray studies show that the packing of atoms in a crystal of a metal is found to be in layers such that starting from any layer, every fourth layer is exactly identical. The density of the metal is found to be 19.4 g cm–2 and its atomic mass is 197 u.
Q.
The length of the edge of the unit cell will be
  • a)
    407 pm
  • b)
    189 pm
  • c)
    814 pm
  • d)
    204 pm
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
X-ray studies show that the packing of atoms in a crystal of a metal i...
Dear, this is XYZXYZ.... pattern which corresponds to ccp structure, which have fcc unit cell, means z=4 and it is a cubic unit cell, now you can easily find a by the formula d= zM/a3N, where N is Avogadro Number and 3 is cube of a. I think you got it, dear..
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Community Answer
X-ray studies show that the packing of atoms in a crystal of a metal i...
Apply formula
z=NM/z^3No
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X-ray studies show that the packing of atoms in a crystal of a metal is found to be in layers such that starting from any layer, every fourth layer is exactly identical. The density of the metal is found to be 19.4 g cm–2 and its atomic mass is 197 u.Q.The length of the edge of the unit cell will bea)407 pmb)189 pmc)814 pmd)204 pmCorrect answer is option 'A'. Can you explain this answer?
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X-ray studies show that the packing of atoms in a crystal of a metal is found to be in layers such that starting from any layer, every fourth layer is exactly identical. The density of the metal is found to be 19.4 g cm–2 and its atomic mass is 197 u.Q.The length of the edge of the unit cell will bea)407 pmb)189 pmc)814 pmd)204 pmCorrect 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 X-ray studies show that the packing of atoms in a crystal of a metal is found to be in layers such that starting from any layer, every fourth layer is exactly identical. The density of the metal is found to be 19.4 g cm–2 and its atomic mass is 197 u.Q.The length of the edge of the unit cell will bea)407 pmb)189 pmc)814 pmd)204 pmCorrect 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 X-ray studies show that the packing of atoms in a crystal of a metal is found to be in layers such that starting from any layer, every fourth layer is exactly identical. The density of the metal is found to be 19.4 g cm–2 and its atomic mass is 197 u.Q.The length of the edge of the unit cell will bea)407 pmb)189 pmc)814 pmd)204 pmCorrect answer is option 'A'. Can you explain this answer?.
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