Structure of At...

A stationary $$He^+$$ ion emitted a photon corresponding to the first line of the Lyman series. The photon liberates a photo electron from a stationary hydrogen atom in ground state. The kinetic energy?

If the velocity of an electron moving in first Bohr's orbit of hydrogen has to be reduced to$$7.27\times 10^{5}ms^{-1}$$ it should be shifted from its existing position by

In an electronic transition atom cannot emit -

Imagine an atom made up of proton and a a hypothetical particle of double the mass of the electron but having the same charge as the electron. Apply the Bohr atom model and consider all possible transitions of this hypothetical particle to the first excited level. The longest wavelength photon that will be emitted has wavelength $$\lambda $$ (give in term of the Rydberg constant R for the hydrogen atom) equal to

In Bohr series of lines of hydrogen spectrum, third line from the red end corresponds to which one of the following inner orbit jumps of electron for Bohr's orbit in atom of hydrogen 

 In a Bohr's model of an atom, when an electron jumps from n = 1 to n = 3, how much energy will be emitted?

The distance between $$3^{rd}$$ & $$2^{nd}$$ Bohr orbit $$He^{+}$$ is 

The ratio of the radii of the first three Bohr orbit in H atom is 

The first three radius ratio of Bohr orbits

According to Bohr's model, if the kinetic energy of an  electron in $$2^{nd}$$ orbit of $$He^{+}$$ is $$x$$, then what should be the ionisaion energy of the electron revolving in $$3^{rd}$$ orbit of $$m^{5+} ions>$$