Question

[
begin{array}{c}
y_{lambda}=Rleft[frac{1}{n^{2}}-frac{1}{P^{2}}right]
frac{1}{1.03 times 10^{-7}}=Rleft[frac{1}{(1)^{2}-frac{1}{p^{2}}}right]
frac{1}{1.03 times 10^{-7}}=1.09 times 10^{9}left[1-frac{1}{p^{2}}right]
frac{1}{1.1227}=1-frac{1}{p^{2}}
1-0.89=frac{1}{p^{2}}
0.11=frac{1}{p^{2}}
p^{2}=frac{1}{0.11}
p^{2}=9
therefore D=3
end{array}
]
Hence, The inital energy level of a elction (p) is 3.

# A line in Lyman series of hydrogen atom has a wavelength of 1.03 x 10-'m. What is the initial energy level of the electron?

Solution