Na crystallizes in fcc lattice having edge length 500 pm. Mass of the Na particle is 4.151 × 10^{– 23}g. the density of the lattice is:

- a)1.33 g/cm
^{3} - b)1.5 g cm
^{3} - c)1.75 g/cm
^{3} - d)2.00 g cm
^{3}

Correct answer is option 'A'. Can you explain this answer?

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3 Answers

Amit Jangra
answered
Jan 05, 2019

In the question Mass of single Na is given so we have to be careful that we cant use Avagadro no in our formula ,because it is used when we have atomic weight ,try this question by omitting N(Avagadro) from the formula of density and convert 500pm into cm and you get your ans

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Na crystallizes in fcc lattice having edge length 500 pm. Mass of the Na particle is 4.151 10 23g. the density of the lattice is:a)1.33 g/cm3b)1.5 g cm3c)1.75 g/cm3d)2.00 g cm3Correct answer is option 'A'. Can you explain this answer? over here on EduRev! Apart from being the largest Chemistry community, EduRev has the largest solved
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