Atomic StructureEasy
Question
Energy required for the electron excitation in Li++ from the first to the third Bohr orbit is :
Options
A.36.3 eV
B.108.8 eV
C.122.4 eV
D.12.1 eV
Solution
En = - 13.6 
ELi++ = - 13.6 ×
= - 122.4eV
ELi++ = - 13.6 ×
= - 13.6eV
ᐃE = - 13.6 - (- 122.4)
= 108.8 eV
ELi++ = - 13.6 ×
= - 122.4eVELi++ = - 13.6 ×
= - 13.6eVᐃE = - 13.6 - (- 122.4)
= 108.8 eV
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