Dr. H.C. Srivastava and SUMEDHA SRIVASTAVA Solutions for Chapter: Solid State, Exercise 6: TRUE OR FALSE TYPE QUESTIONS

The coordination number in hcp is the same as that in ccp.

A tetrahedral void is formed by four spheres.

The number of tetrahedral voids in a close-packed structure is the same as the number of constituent particles.

Radius of an octahedral void is $0.414$ times the radius of the constituent particle.

For stable bcc arrangement, the radius ratio is greater than $0.732$ and the coordination number is $8$.

In a crystal of $\mathrm{NaCl}, {\mathrm{Na}}^{+}$ ions occupy all the tetrahedral voids present in the lattice.

In diamond, carbon atoms are in a state of ${\mathrm{sp}}^2$ hybridisation.

${\mathrm{ZnSO}}_4.7{\mathrm{H}}_2\mathrm{O}$ and ${\mathrm{FeSO}}_4.7{\mathrm{H}}_2\mathrm{O}$ are isomorphous substances.