Question

A cubic solid is made of 2 elements P and Q , Atoms of P are at corners of cube and atoms of Q are at Body centres , What is the formula of the compound and what are Coordination numbers of P and Q

Answer 1

According to the description of the task condition, we are dealing with a body-centered cubic crystal lattice, in which each atom, for example, P or Q, is associated with 8 such atoms. Therefore, the coordination number of this structure is 8. In this crystal lattice, P atoms are positively charged, and Q atoms are negative. The formula of substance QP2. For example CaF2.