Question

write about the Self interstitial defect in elemental solid​

Answer 1

Explanation:

Self-interstitials The structure of interstitial defects has been experimentally determined in some metals and semiconductors. Contrary to what one might intuitively expect, most self-interstitials in metals with a known structure have a 'split' structure, in which two atoms share the same lattice site.

Answer 2

Answer:

Interstitial sites in a crystal are the spaces or voids in between the particles at lattice points. When some particles of a crystalline elemental solid occupy interstitial sites in the crystal structure, it is called self interstitial defect. This defect occurs in the following two ways :Firstly, an extra particle occupies an empty interstitial space in the crystal structure This extra particle is same as those already present at the lattice points.