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2.19
The electron energy in hydrogen atom is given by E = (-2.18x10 "/r? J. Calculate
the energy required to remove an electron completely from the n=2 orbit. What is
the longest wavelength of light in cm that can be used to cause this transition?
Answers
Answered by
2
Answer:
Explanation:
E
n
=(−2.18×10
−18
)n
2
joule
Energy required to remove an electron completely from n=2 orbit
E
2
=(−2.18×10
−18
)2
2
=−8.72×10
−18
8.72×10
−18
=
λ
hc
λ=
8.72×10
−18
6.626×10
−34
×3×10
8
=2.27958×10
−8
m
=227.96 A
o
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