NEET 2012 Chemistry question

Chemistry The Solid State NEET 2012

Not in JEE Main or NEET syllabus

A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is . The diameter of the metal atom is :

(1)
(2)Correct
(3)
(4)

Answer: (2)

Solution

In an fcc lattice the atoms touch along the face diagonal, so . Diameter \dfrac{\sqrt{2} a}{2}\dfrac{a}{\sqrt{2}}$ =

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Question ID VK-091098