Which of the following transitiona in hydrogen atoms emit photons of highest frequency?

Options

A. n=6 to n=2
B. n=2 to n=1
C. n=1 to n=2
D. n=2 to n=6

Answer

B

Explanation

`E_(2)=(-13.6)/(2^(2))=-3.4eV`
`E_(1)=(-13.6)/(1^(2))=-13.6eV`
`hv=E_(1)-(E_(2))=-3.4 +13.6=10.2eV("max")`.
v is the highest i.e.` n_(2)=2+0 n=1`.