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If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC fashion then what is the surface area of each unit cell?
  • a)
    1.32 × 106 pm2
  • b)
    1.32 × 10-18pm2
  • c)
    2.20 × 105 pm2
  • d)
    2.20 × 10-19 pm2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC...
ABCABC arrangement is found in CCP.
In closed cubic packing, relation between edge length of unit cell, a, and radius of particle, r, is given as a=2√2r.
Surface area (S.A.) = 6a2
From the relationship,
a2 = 8r2
S.A. = 6a2 = 48r2
When r = 166 pm, S.A. = 48(166pm) = 1.32 x 106 pm2.
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Community Answer
If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC...
ABCABC arrangement is found in CCP.
In closed cubic packing, relation between edge length of unit cell, a, and radius of particle, r, is given as a=2√2r.
Surface area (S.A.) = 6a2
From the relationship,
a2 = 8r2
S.A. = 6a2 = 48r2
When r = 166 pm, S.A. = 48(166pm) = 1.32 x 106 pm2.
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If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC fashion then what is the surface area of each unit cell?a)1.32 × 106 pm2b)1.32 × 10-18pm2c)2.20 × 105 pm2d)2.20 × 10-19 pm2Correct answer is option 'A'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC fashion then what is the surface area of each unit cell?a)1.32 × 106 pm2b)1.32 × 10-18pm2c)2.20 × 105 pm2d)2.20 × 10-19 pm2Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC fashion then what is the surface area of each unit cell?a)1.32 × 106 pm2b)1.32 × 10-18pm2c)2.20 × 105 pm2d)2.20 × 10-19 pm2Correct answer is option 'A'. Can you explain this answer?.
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