Atomic StructureMedium
Question
When a hydrogen atom is exited from ground state to first excited state then :
Options
A.its kinetic energy increases by 10.2 eV
B.its kinetic energy decreases by 10.2 eV
C.its potential energy increases by 20.4 eV
D.its angular momentum increases by 1.05 × 10-34 J - s
Solution
| ᐃK | = 13.6 
= 10.2 eV
| ᐃU | = 27.2 = 20.4 eV
ᐃL =
= 10.2 eV| ᐃU | = 27.2
= 20.4 eVᐃL =
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