A crystalline solid of a pure substance has a face-centred cubic structure with a…

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of

400 \text{ pm}

. If the density of the substance in the crystal is

8 \text{ g cm}^{-3}

, then the number of atoms present in

256 \text{ g}

of the crystal is

N \times 10^{24}

. The value of

N

is: [JEE (Main) 2017]