Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

Atomic radius is of the order of $10^{-8} cm$ and nuclear radius is of the order of $10^{-13}$ cm. calculate what fraction of atom is occupied by nucleus?

$(a)\;10^{-14} \times V_{atom}\qquad(b)\;10^{-13} \times V_{atom}\qquad(c)\;10^{-15} \times V_{atom}\qquad(d)\;10^{-11} \times V_{atom}$

Can you answer this question?

1 Answer

0 votes
Volume of nucleus = $\large\frac{4}{3}\pi r^3 = \large\frac{4}{3}\pi(10^{-3})^3 cm^3$
Volume of atom = $\large\frac{4}{3}\pi(10^{-8})^3cm^3$
$\large\frac{V_N}{V_{atom}} = \large\frac{10^{-39}}{10^{-24}}$
$V_{nucleus} = 10^{-15}\times V_{atom}$
Hence answer is (c)
answered Jan 31, 2014 by sharmaaparna1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App