(i) Consider the nucleus of a H atom as a point charge electron circling about it at a speed of $v$ and a radius of $r_A$ The Coulombian force acts as a centrifugal force, causing the nucleus to...
Atoms
If a proton had a radius R and the charge was uniformly distributed, calculate using Bohr theory, the ground state energy of a H-atom when
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Would the Bohr formula for the H-atom remain unchanged if proton had a charge (+4/3)e and electron a charge $(-3 / 4) e$, where $e=1.6 \times 10^{-19} \mathrm{C}$ ? Give reasons for your answer.
The product of both charges will remain the same since the position of the proton and electron will not change.
When an electron falls from a higher energy to a lower energy level, the difference in the energies appears in the form of electromagnetic radiation. Why cannot it be emitted as other forms of energy?
Because the charged particle accelerates, the difference in energies shows in the form of electromagnetic radiation as an electron descends from a higher to a lower energy level.
Imagine removing one electron from $He^4$ and $He^3$. Their energy levels, as worked out on the basis of Bohr model will be very close. Explain why.
According to the Bohr model, the energies of $He^4$ and $He^3$ will be fairly near because each have one electron, much like the hydrogen atom, and the nucleus is four times heavier than the...
The simple Bohr model is not applicable to $\mathrm{He}^{4}$ atom because
(a) $\mathrm{He}^{4}$ is an inert gas
(b) $\mathrm{He}^{4}$ has neutrons in the nucleus
(c) $\mathrm{He}^{4}$ has one more electron
(d) electrons are not subject to central forces
The correct options are: (c) $\mathrm{He}^{4}$ has one more electron (d) electrons are not subject to central forces