The Solid State Set-1

Q1. Chottky defect defines imperfection in the lattice structure of

Q2. An $AB_2$ type structure is found in

Q3. An element (atomic mass $100\ g/mol$) having $bcc$ structure has unit cell edge $400\ pm$. The density of element is (No. of atoms in $bcc$, $Z = 2$)

Q4. What is the coordination number of sodium in $Na_2O$?

Q5. The compound, found in nature in gas phase but ionic in solid state is

Q6. The $Ca^{2+}$ and $F^–$ are located in $CaF_2$ crystal, respectively at face centred cubic lattice points and in

Q7. The coordination number in $hcp$ is

Q8. The space lattice of graphite is

Q9. Coordination numbers of $Zn^{2+}$ and $S^{2–}$ in the crystal structure of wurtzite are

Q10. Gold has a face centred cubic lattice with an edge length of the unit cube of $407\ pm$. Assuming the closest packing, the diameter of the gold atom is