Question

calculate the wavelength of laying spectrum obtained when an electron is H atom is transferred from third orbit to second orbit?​

Answer 1

Answer:

in both cases electron came to second orbit, we will consider Balmer series,

Now, for Balmer series, wavelength is given by,

λ

1

=R(

2

2

1

−

n

2

1

),n=3,4,5

In case1, when n=3, λ=λ

0

λ

0

1

=R(

4

1

−

9

1

),n=3,4,5

R=

5λ

0

36

→(1)

In case2, when n=4, λ is given by

λ

1

=R(

2

2

1

−

4

2

1

)

λ

1

=R(

4

1

−

16

1

)=

20λ

0

27

λ=

27

20λ

0