Question

An element occurring in the bcc structure has 12.08 × 1023 unit cells. The total number of atoms of the elements in these cells will be

Solution

Correct option is

24.16 × 1023

 

There are two atoms in a bcc unit cell.

so, number of atom in = 2.08 × 1023 unit cells

                                    = 2 × 12.08 × 1023

                                    = 24.16 × 1023 atoms

SIMILAR QUESTIONS

Q1

An example of a non – stoichiometric compound is

Q2

A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely disappears. This behavior is the characteristic of substances forming.

Q3

 

Amorphous substances show

(i) short and long range order

(ii) short range order

(iii) long range order

(iv) have no sharp melting point

Q4

The solid NaCl is a bad conductor of electricity since

Q5

The correct statement in the following is

Q6

 

The crystal system of a compound with unit cell dimensions,

a = 0.387, b = 0.387 and c = 0.504 nm, and α = β = 900 and γ = 1200 is

Q7

If Z is the number of atoms in the unit cell that represents the closest packing sequence …… ABC ABC …… the number of tetrahedral voids in the unit cell is equal to

Q8

In which of the following crystals alternate tetrahedral voids are occupied?

Q9

A solid is made of two elements X and Z. the atoms Z are in ccp arrangement while the atom X occupy all the tetrahedral sites. What is the formula of the compound?

Q10

The number of sphere contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is