Solid State · Chemistry · AIIMS

The tetrahedral voids are present in 0.5 mole of hcp crystal structure

Which of the following is correct order of packing efficiency?

Assertion : ZnO becomes yellow when it is heated. Reason : The anionic sites occupied by unpaired electrons (due to F-centres)....

Which of the following is an example of network solid?

Niobium crystallises in body centred cubic structure. If density is $$8.55 \mathrm{~g} \mathrm{~cm}^{-3}$$, then the atomic radius of niobium is (atom...

A solid has a structure in which W atoms are located at the corners of a cubic lattice. O atoms at the centre of edges and Na atom at centre of the cu...

Assertion (A) Graphite is an example of tetragonal crystal system. Reason (R) For a tetragonal system, $$a=b \neq c$$ and $$\alpha=\beta=90^{\circ}, \...