Name the unit in which the radius of an atom is usually expressed.

Name the unit in which the calorific value of a fuel is expressed.

Name the unit in which the calorific value of a fuel is expressed.

Name the unit in which the calorific valu of a fuel is expressed.

Name the unit in which the work function of a metal is expressed.

A metal 'X' crytallizes in a unit cell in which the radius of atom (r) is related to edge of unit cell (a) as r = 0.3535 a. The total number of atoms present per unit cell is