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Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StateCubic CrystalsMedium2 minPYQ_2021

ChemistryMediumsingle choice

The density of chromium metal is $7 g cm^{- 3}$ . If edge length of unit cell is $300 pm$ , identify the type of unit cell. (At. mass $Cr = 52$ )

Options:

Answer:

Solution:

$d = \frac{ZM}{N _{A} a ^{3}} Z = \frac{d \cdot N _{A} \cdot a ^{3}}{M} a = 300 pm a = 300 \times 1 0^{- 10} cm a = 3 \times 1 0^{- 8} cm = \frac{7 \times 6.022 \times 1 0 ^{23} \times ( 3 \times 1 0 ^{- 8} ) ^{3}}{52}$ Unit cell is Body centred cubic

Stream:MHT_CETSubject:ChemistryTopic:Solid StateSubtopic:Cubic Crystals

⏱ 2mℹ️ Source: PYQ_2021

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