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Home
»
Modern Physics
»
Atoms
» Question
Atoms
Easy Questions
Modern Physics
Dual Nature of Radiation and Matter
Atoms
Nuclei
Semiconductor Electronics : Materials, Devices and Simple Circuits
The energy of hydrogen atom in nth orbit is E
n
, then the energy in nth orbit of single ionised helium atom will be
4E
n
E
n
/4
2E
n
E
n
/2
Correct Option:
A
We have
E
n
=
-2π
2
mK
2
Z
2
e
4
n
2
h
2
For helium Z = 2. Hence requisite answer is 4E
n
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