Questions
The wavelength of radiation required to excite the electron from the first orbit to the third orbit in a doubly ionized lithium atom will be
a
134.25 Å
b
125.5 Å
c
113.7 Å
d
110 Å
detailed solution
Correct option is C
Required energy =−13.69−−13.61×9∵E=−13.6z2n2 =13.6−13.699=8×13.6eV Wavelength =123758×13.6=113.7Å∵E=12375λÅevTalk to our academic expert!
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