Question

In a hydrogen like sample, electrons are in a particular excited state. If electrons make transition up to1st excited state, then it produces maximum 15 different types of spectral lines. Then, electrons were initially in

Answer 1

Explanation:

Given,

Electron is in 5

th

excited state,

⇒n

2

=6

Electron dexcite to visible region,

⇒n

1

=2

Now,

Number of spectral lines =

2

(n

2

−n

1

)(n

2

−n

1

+1)

=

2

(6−2)(6−2+1)

=

2

4×5

=10

Answer 2

Explanation:

In a hydrogen like sample, electrons are in a particular excited state. If electrons make transition up to1st excited state, then it produces maximum 15 different types of spectral lines. Then, electrons were