Calculate the wavelength of second member of Lyman series. Give
Ry =1.097X10'm
m^-1. please reply urgent
Answers
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0
Explanation:
Given data:
R=1.097×10
7
m
−1
For short wavelength limit of Lyman Series,
n
1
=1,n 2
=∞,λ s
=?
For long wavelength limit of Lyman series,n 1
=1,n 2
=2,λ 1 ?
Solution:
The wave number for Lyman series is,
v
ˉ
=R[ n 12
1
−
n
2
2
1
]
For short wavelength limit,
v
s
ˉ
=
λ
s
1
=R[
1
2
1
−
(∞)
2
1
]=R
or λ
s
=
R
1
=
1.097×10
7
1
=911.6
A
o
For long wavelength limit
v
1
ˉ
=
λ
1
1
=R[
1
2
1
−
2
2
1
]=
4
3
R
λ
l
=
3R
4
=
3×1.097×10
7
4
λ
l
=
1215
A
o
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