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Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StateMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

The unit cell of aluminium is cube with edge length 405 pm. The density of aluminium is 2.70 g $c m^{- 3}$ . The unit cell type of aluminium crystal is

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Answer:

Solution:

$Z = \frac{d e n s i t y \times a^{3} \times N_{A}}{M}$
$= \frac{(2.70 g c m^{- 3}) (4.05 \times 1 0^{- 8} c m)^{3} 6.023 \times 1 0^{23} m o l^{- 1}}{26.98 m o l^{- 1}}$
$= 4$
The unit cell of Al is fcc as Z is 4.

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Solid StateSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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