NEET Chemistry The Solid State Questions Solved

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An element exists in bcc lattice with a cell edge of 288 pm. Calculate its molar mass if its density is 7.2 g/cm³. 3mark

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Concept Questions :-

Density/Formula/packing fraction/ Semiconductors

In bcc, z=2 ;

$d = \frac{z \times M}{a^{3} \times N_{a}}$ (i) 1mark

Putting values of M in equation (i)

$M = \frac{7.2 \times 288 \times 10^{- 10} \times N_{a}}{2}$ 1mark

= 51.8 g/ mol 1mark

(or any other correct method )

Difficulty Level:

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