Calculate the number of valence electrons in $4.2 \ g$ of $N_3^-$ ions in terms of $N_A$ ($N_A$ = Avogadro constant). (in $N_A$)
- A$2.1$
- B$4.2$
- C$1.6$
- D$3.2$
Explore More
Similar Questions
How many moles of $Al_2(SO_4)_3$ are present in $50 \ g$ of the substance?
Medium
View SolutionThe total number of protons in $10 \ g$ of calcium carbonate is $(N_0 = 6.023 \times 10^{23})$
Difficult
View SolutionWhich of the following contains the maximum number of atoms?
Easy
View SolutionThe number of atoms in $4.25 \text{ g}$ of $NH_3$ is approximately
Difficult
View SolutionWhich one of the following pairs of gases contains the same number of molecules?
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo