(D) In $NaCl$ (rock salt) structure:Number of $Na^{+}$ ions $= 12$ (at edge centers) $\times \frac{1}{4} + 1$ (at body center) $\times 1 = 3 + 1 = 4$.

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

(D) In $NaCl$ (rock salt) structure:Number of $Na^{+}$ ions $= 12$ (at edge centers) $\times \frac{1}{4} + 1$ (at body center) $\times 1 = 3 + 1 = 4$.Number of $Cl^{-}$ ions $= 8$ (at corners) $\times \frac{1}{8} + 6$ (at face centers) $\times \frac{1}{2} = 1 + 3 = 4$.Since there are $4$ $Na^{+}$ ions and $4$ $Cl^{-}$ ions per unit cell,the number of formula units per unit cell is $4$.

Class 12 Chemistry Solid State Crystal structure and Coordination number

Medium

In the rock salt structure,the number of formula units per unit cell is equal to

A
$1$
B
$2$
C
$3$
D
$4$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

Solid State

Subtopic

Crystal structure and Coordination number

What is the number of atoms per unit cell in a face-centered cubic $(FCC)$ crystal lattice?

Easy

View Solution

In sodium chloride crystal,the number of next nearest neighbours of each $Na^{+}$ ion is

Medium

View Solution

Diamond has a three-dimensional structure of $C$ atoms formed by covalent bonds. The structure of diamond has a face-centered cubic $(FCC)$ lattice where $50\,\%$ of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is $......$

DifficultJEE MAIN 2021

View Solution

Find the radius of an atom in $fcc$ unit cell having edge length $393 \ pm$. (in $pm$)

MediumMHT CET 2023

View Solution

Which one possesses an antifluorite structure?

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

In the rock salt structure,the number of formula units per unit cell is equal to

Similar Questions

What is the number of atoms per unit cell in a face-centered cubic $(FCC)$ crystal lattice?

In sodium chloride crystal,the number of next nearest neighbours of each $Na^{+}$ ion is

Diamond has a three-dimensional structure of $C$ atoms formed by covalent bonds. The structure of diamond has a face-centered cubic $(FCC)$ lattice where $50\,\%$ of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is $......$

Find the radius of an atom in $fcc$ unit cell having edge length $393 \ pm$. (in $pm$)

Which one possesses an antifluorite structure?

Vedclass Test Series

Exam Paper Generator

Online Exam Module