Chemistry - Solid State Question with Solution | TestHub

ChemistrySolid StateGeneralEasy2 minPYQ_2020

ChemistryEasynumerical

Iron crystallizes in body centered cubic system with edge length $2 .86 Å$ . The density of iron is nearly 'X' g/ml. What is the value of 'X' here?
Report your answer by rounding it upto nearest whole number.

Answer:

8.00

Solution:

As $d = \frac{Z m}{a^{3} N_{A}} = \frac{2 \times 56}{(2.86 \times 1 0^{- 8}) \times 6.02 \times 1 0^{23}}$

$\approx 7.92 g c m^{3} ≃ 8 g c m^{3}$

$≃ 8 g / m l$

Stream:JEESubject:ChemistryTopic:Solid StateSubtopic:General

⏱ 2mℹ️ Source: PYQ_2020

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