Question

An element crystalises in fcc and has edge length 0.56.calculate the density of the element . Molar mass of the elements is 40gpermole

Answer 1

Buddy use the following formula to calculate density:

Density = Z ×M/Na×V

Where;

Z=no. of atoms

M = molar mass

Na= avogadro no.

V= Volume

P.S: For competitive exams use the following data for Z:

For NaCl and its type.Z=4

CsCl Z=1

ZnS=4

Answer 2

Answer:

1.512g/cm3

Explanation:

d =Z ×M ÷a3×Na

d=4×40÷ 0.56×10power -9 ×6.023×10power 23

d=1.512gcm-3