The number of tetrahedral voids present in 0. | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In a hexagonal closed packing $(HCP)$ structure,the number of atoms per unit cell is $Z = 6$.The number of tetrahedral voids $(TV)$ is given by $2

Vedclass · Accepted Answer

$3.6 	imes 10^{24}$

Vedclass · Answer

(C) In a hexagonal closed packing $(HCP)$ structure,the number of atoms per unit cell is $Z = 6$.The number of tetrahedral voids $(TV)$ is given by $2 	imes Z$.So,$TV = 2 	imes 6 = 12$ per unit cell.For $1 	ext{ mole}$ of $HCP$ structure,the number of tetrahedral voids is $12 	imes N_A$.For $0.5 	ext{ mole}$ of $HCP$ structure,the number of tetrahedral voids is $12 	imes 0.5 	imes N_A = 6 	imes N_A$.Substituting $N_A = 6.022 	imes 10^{23} 	ext{ mol}^{-1}$:$6 	imes 6.022 	imes 10^{23} = 3.6132 	imes 10^{24} \approx 3.6 	imes 10^{24}$.

The number of tetrahedral voids present in $0.5 \text{ mole}$ of $HCP$ crystal structure is:

Similar Questions

An organic compound with the molecular formula $C_3H_6O$ does not give a precipitate with $2,4-$dinitrophenylhydrazine and does not react with sodium metal. What is this compound?

If $\frac{ax + b}{(3x + 4)^2} = \frac{1}{3x + 4} - \frac{3}{(3x + 4)^2}$,then:

Heat required to melt $1\, g$ of ice is $80\, cal$. $A$ man melts $60\, g$ of ice by chewing in one minute. His power is ........ $W$.

The blood leaving the liver and moving towards the heart has a higher concentration of which of the following?

Three point charges $1 \ C$,$-2 \ C$,and $-2 \ C$ are placed at the vertices of an equilateral triangle of side $1 \ m$. The work done by an external force to increase the separation of the charges to $2 \ m$ in joules is $(\varepsilon_0 = \text{permittivity of air})$

Vedclass Test Series

Exam Paper Generator

Online Exam Module