A regular arrangement of points is known as lattice.
The sharp melting point of crystalline solid is due to .............
(a) a regular arrangement of constituent particles observed over a short distance in the crystal lattice
(b) a regular arrangement of constituent particles observed over a long distance in the crystal lattice
(c) same arrangement of constitent particles in different directions
(d) different arrangement of constituent particles in different directions
In a solid lattice the cation and anion both have left a lattice site. The lattice defect is known as.