Atoms And Nuclei Question 425
Question: According to Bohr’s theory the radius of electron in an orbit described by principal quantum number n and atomic number Z is proportional to
Options:
A) $ Z^{2}n^{2} $
B) $ \frac{Z^{2}}{n^{2}} $
C) $ \frac{Z^{2}}{n} $
D) $ \frac{n^{2}}{Z} $
Show Answer
Answer:
Correct Answer: D
Solution:
- $ r=\frac{{\varepsilon_{0}}n^{2}h^{2}}{\pi Zme^{2}};\ \ \therefore r\propto \frac{n^{2}}{Z} $
