MHT CET 2024 Chemistry question

Not in JEE Main or NEET syllabus

Calculate the edge length of fcc unit cell if radius of metal atom is 139 pm.

Answer: (C)

Solution

In an fcc unit cell the atoms touch along the face diagonal, which equals . By Pythagoras the face diagonal is , so and . With pm: pm $=

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Question ID VK-092777