The number of atoms in 100 gm of a fcc crystal with density, d = 10 gm⁄cc and cell edge as 200 pm is equal to:

92) The number of atoms in 100 gm of a fcc crystal with density, d = 10 gm⁄cc and cell edge as 200 pm is equal to:

Answer is:

Explanation:

M = (d x a³ x N₀) ⁄ Z

Answer is:

The radius r⁺⁄r⁻ increases as coordination number increases

As the difference in the size of ions increases, coordination number increases

When coordination number is 8, the r⁺⁄r⁻ ratio lies between 0.225 and 0.414

In ionic solid of the type AX(ZnS, Wurtzite), the coordination number of Zn²⁺ and S²⁻ respectively are 4 and 4

Answer is:

Answer is:

Answer is:

Explanation:

TiO₂ has a tetragonal system with 5 planes of symmetry and 5 axes of symmetry.