CBSE Class 12 Chemistry 2014 Delhi Set 1 Solved Paper

Question : 9 of 30

Marks: +1, -0

An element with density

11.2\,\mathrm{gm}\,\mathrm{cm}^{-3}

forms f.c.c. lattice with edge length

4 \times 10^{-8}\,\mathrm{cm}

. Calculate the atomic mass of the element. (Given

N_{\mathrm{A}} = 6.022 \times

10^{23}\,\mathrm{mol}^{-1}

)

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