The tetrahedral voids formed by ccp arrangement of CI– ions in rock salt structure are:
Occupied by Na+ ions
Occupied by CI– ions
Occupied by either Na+ or CI– ions
Vacant
D.
Vacant
638 Views
Advertisement
Short Answer Type
Name the crystal defect which lowers the density of an ionic crystal
316 Views
Multiple Choice Questions
The available space occupied by spheres of equal size in three dimensions in both hcp and ccp arrangements is:
74%
70%
60.4%
52.4%
437 Views
The presence of F-centres in a solid makes it
conducting
colourless
coloured
non-conducting
292 Views
Short Answer Type
What makes the crystal of KCl appear sometimes violet?
730 Views
Advertisement
Multiple Choice Questions
Most crystals show good cleavage because their atoms, ions and molecules are
Weakly bonded together
strongly bonded together
spherically symmetrical
arranged in planes.
1643 Views
A compound is formed by elements A and B. This crystallises in the cubic structure when atoms A are at the corners of the cube and atoms B are at the centre of the body. The simplest formula of the compound is:
AB
AB2
A2B
AB4
238 Views
Short Answer Type
What is the effect of Schottky and Frenkel defects on the density of crystalline solids?
897 Views
Multiple Choice Questions
If the distance between Na+ and CI– ions in NaCl crystal is a pm, what is the length of the cell edge?