SaraNextGen.Com

Give the total score of the correct statements of the following

 

 

Statements

Score

a.

First two nearest neighbour distances for sc lattice are, respectively,  and

4

b.

First two nearest neighbour distances for bcc lattice are, respectively,  and

3

c.

In  (wurtzite),  ions occupy lattice point while in (zinc blende),  ions occupy alternate TVs

2

d.

In point defects, volume and geometry of the crystal do not change

1

 



Question ID - 154190 | SaraNextGen Top Answer

Give the total score of the correct statements of the following

 

 

Statements

Score

a.

First two nearest neighbour distances for sc lattice are, respectively,  and

4

b.

First two nearest neighbour distances for bcc lattice are, respectively,  and

3

c.

In  (wurtzite),  ions occupy lattice point while in (zinc blende),  ions occupy alternate TVs

2

d.

In point defects, volume and geometry of the crystal do not change

1

 

1 Answer
127 votes
Answer Key / Explanation : (8) -

(8)

Statements (a), (b), and (d) are correct

a. So total score

Nearest neighbour of atom 2 are 1 and 3

Distance between atom 1 and 2

Distance between atom 2 and 3

b. Nearest neighbour of atom D are E and F (F atom is in body center)

body diagonal

Distance DF

Distance ED

c. Option (c) is wrong.  (wurtzite) and  (zinc blende) are polymorphs. Same substance occurring in different crystal forms is called polymorphism

But in both the compounds, cations  ions) occupy alternate TVs

In both compounds,  occupies lattice points

d. Correct statement

127 votes


127