A compound contains two types of atoms $A$ and $B$ ．Its crystal structure is a cubic lattice with＇$A$＇ atoms at the corner of the unit cells and＇$B$＇atoms at the body centres．The simplest formula of the compound will be

If three elements $A, B, C$ crystalise in a cubic solid lattice with $B$ atoms at the cubic centres, $C$ aton at the centre of edges and A atoms at the corners, then formula of the compound is

Metallic conductors and semiconductors are heated separately. What are the changes with respect to conductivity?

What is the edge length of the unit cell of a body centred cubic crystal of an element whose atomic radius is 75 pm?