Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
125 views
in Chemistry by (38.6k points)
closed by

How many unit cells are present in a cubeshaped ideal crystal of NaCl of mass 1.00 g? [Atomic masses: Na = 23, Cl = 35.5]

(A) 1.28 × 1021 unit cells

(B) 1.71 × 1021 unit cells

(C) 2.57 × 1021 unit cells

(D) 5.14 × 1021 unit cells

1 Answer

+1 vote
by (33.5k points)
selected by
 
Best answer

Correct answer is: (C) 2.57 × 1021 unit cells

Mass of one unit cell = density \(\times\) volume

= d \(\times\) a3

\(\therefore\) Number of unit cells in 1 g NaCl

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...