Question

calculate the wavelength of spectral line in Lyman series when as electron falls from third energy level in hydrogen atom​

Answer 1

Answer:

9.69×10

−8

metres

∴

λ

1

=R

H

[

n

1

2

1

−

n

2

2

1

]

Given; R

H

=1.1×10

7

; for Lyman series n

1

=1 and n

2

=4(given)

∴

λ

1

=1.1×10

7

[

1

2

1

−

4

2

1

]

∴9.69×10

−8

metre