In a close-packed arrangement,A type of atoms | vedclass

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

Question

(D) In a $fcc$ unit cell: Number of $A$ atoms (corners) = $8 	imes \frac{1}{8} = 1$. Number of $B$ atoms (face centers) = $6 	imes \frac{1}{2} = 3$.

Vedclass · Accepted Answer

None of these

Vedclass · Answer

(D) In a $fcc$ unit cell: Number of $A$ atoms (corners) = $8 	imes \frac{1}{8} = 1$. Number of $B$ atoms (face centers) = $6 	imes \frac{1}{2} = 3$. Number of $C$ atoms (tetrahedral voids) = $8$. Number of $D$ atoms (octahedral voids) = $4$. Along one body diagonal,there are $2$ corners and $2$ tetrahedral voids. Removing these: $A = 1 - (2 	imes \frac{1}{8}) = 1 - \frac{1}{4} = \frac{3}{4}$. $B = 3$ (no change). $C = 8 - 2 = 6$. $D = 4$ (no change). Formula: $A_{3/4}B_3C_6D_4$. Multiplying by $4$: $A_3B_{12}C_{24}D_{16}$.

In a close-packed arrangement,$A$ type of atoms are at corners,$B$ type of atoms are at face centers,$C$ type of atoms are at tetrahedral voids,and $D$ type of atoms are at octahedral voids. If all the atoms along any one body diagonal are removed,what will be the formula of the compound?

Similar Questions

$A$ metal $M$ forms a hexagonal close-packed structure. The total number of voids in $0.02 \ mol$ of it is $......... \times 10^{21}$ (Nearest integer) (Given $N_{A} = 6.02 \times 10^{23}$)

In a solid compound,the atoms of $A$ form a face-centered cubic $(fcc)$ lattice,while atoms of $B$ occupy all octahedral voids and half of the tetrahedral voids. The molecular formula of the solid will be ........

Give two examples of metals that crystallize in the $hcp$ (hexagonal close-packed) structure.

Identify the types of voids represented by the structures $I$,$II$,and $III$ in the given image.

In a mixed oxide of $A$ and $B$,$A$ occupies all the octahedral voids while $B$ occupies $(2/3)$rd of the tetrahedral voids. The molecular formula of this oxide is

Vedclass Test Series

Exam Paper Generator

Online Exam Module