Looking for classes? Ksquare Career Institute, Bengaluru →
For which one of the following, Bohr model is not valid?
A
Singly ionised helium atom ($He^+$)
B
Deuteron atom
C
Singly ionised neon atom ($Ne^+$)
D
Hydrogen atom
Detailed Solution
The Bohr model is valid only for single-electron (hydrogen-like) species, such as H, deuterium and $He^+$.
A singly ionised neon atom ($Ne^+$) has more than one electron, so the Bohr model is not valid for it.