{"@context":"https://schema.org/","@type":"Quiz","dateCreated":"2026-07-03T07:17:40.823Z","dateModified":"2026-07-03T07:17:40.823Z","typicalAgeRange":"11-18","educationalLevel":"CPET","assesses":"Chemistry - Solid State","educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalTopic","targetName":"Solid State"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalExam","targetName":"CPET"}],"name":"Quiz about Solid State","about":{"@type":"Thing","name":"Chemistry - Solid State"},"hasPart":[{"@type":"Question","eduQuestionType":"Multiple choice","learningResourceType":"Practice problem","educationalLevel":"intermediate","name":"Question About Solid State","text":"An element crystallizes in the FCC (face-centred cubic) lattice. How many atoms are there per unit cell?}","encodingFormat":"text/markdown","comment":{"@type":"Comment","text":"Add contributions of 8 corner atoms (1/8 each) and 6 face atoms (1/2 each)."},"suggestedAnswer":[{"@type":"Answer","position":0,"encodingFormat":"text/markdown","text":"

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":1,"encodingFormat":"text/markdown","text":"

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","comment":{"@type":"Comment","text":"Add contributions of 8 corner atoms (1/8 each) and 6 face atoms (1/2 each)."},"answerExplanation":{"@type":"comment","text":"Standard values: simple cubic Z=1, BCC Z=2, FCC Z=4, matching FCC's highest packing efficiency (74%).\\[\\boxed{Z = 4}\\]"}}}]}

An element crystallizes in the FCC (face-centred cubic) lattice. How many atoms are there per unit cell?

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The Correct Option is D

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