JEE CHEMISTRY MCQ: SOLID STATE

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Sodium metal crystallizes as a body centred cubic lattice with the cell edge

4.29{A^{^{^ \circ }}}

What is the radius sodium atom?

View answer and explanation

Correct option: A

1.857\mathrm{ \times }{10^{( - 8)}}cm

Option A (

1.857\mathrm{ \times }{10^{( - 8)}}cm

) is correct because the radius of the sodium atom in a BCC lattice is calculated using the formula

r = \frac{{\sqrt 3 a}}{4}

, where a is the cell edge.

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