Question

From which orbit to which orbit an electron must jump so that the spectral line formed of Lyman series has wave number

82000 cm-1

. [R= 109600]​

Answer 1

Explanation:

ν=

λ

c

Thus,

λ

1

=

c

ν

=

3×10

10

82200

=2.74×10

−6

But

λ

1

=R[

n

1

2

1

−

n

2

2

1

For Lyman series, n

1

=1

Substitute values in the above expression.

2.74×10

−6

=109600×[

1

2

1

−

n

2

2

1

Hence, n

2

=2

I hope it helped u