The density of solid w is 19.3 g/cm3. how many atoms are present per cubic centimeter of w?
as a solid, w adopts a body-centered cubic unit cell. how many unit cells are present per cubic centimeter of w?
what is the volume of a unit cell of this metal? what is the edge length of a unit cell of w? explain! !

How many atoms are present per cubic centimeter of W?

Since it is a BCC cell, then it will have 4 atoms per unit cell.

As a solid, W adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of W?
(19.3 g/cm^3)( 1 mol / 183.84 g) ( 6.022x10^23 atoms / 1 mol ) ( 1 cell / 4 atoms) = 1.58x10^22 cells / cm^3

Hope this helps.

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.

The se-ci  bonds is more polar  than s-br bond