Question

A vacancy and an interstitial in close enough proximity in a crystal is known as

Answer 1

Vacancy– when an atom is missing from a particular lattice site (Figure 1.21 (a), page 17)Interstitial– when an atom is located in between lattice sites (Figure 1.21 (b), page 17)Frenkel– when a vacancy and interstitial may be in close enough proximity to exhibit aninteraction; produces a different effect than the simple vacancy or interstitial.Line defect– occurs when an entire row of atoms is missing from its normal lattice siteLine dislocation(Figure 1.22, page 18)