Question

If the radius of the second Bohr of hydrogen atom is `r_(2)` the radius of the third Bohr orbit will be
A. `(4)/(9)r_(2)`
B. `4r_(2)`
C. `(9)/(4)r_(2)`
D. `9r_(2)`

Answer 1

`r = (n^(2)h^(2))/(4pi^(2)mZe^(2))`
`:. (r_(2))/(r_(3)) = (2^(2))/(3^(2))`
`:. V_(3) = (9)/(4)r_(2)`