Atomic Structure Question 198

Question: The ratio of the radii of the three Bohr orbits is

Options:

A) 1:1/2:1/3

B) 1:2:3

C) 1:4:9

D) 1:8:27

Show Answer

Answer:

Correct Answer: C

Solution:

  • $ r=\frac{n^{2}a_0}{Z}, $ (when n=1, Z=1) $ r_1=a_0 $

$ r_2=4a_0 $ (when n=2, Z=1) $ r_3=9a_0 $ (when n=3, Z=1)
Hence, ratio is 1:4:9.



NCERT Chapter Video Solution

Dual Pane