Atoms Test - 71...

In hydrogen like atom electron makes transition from an energy level with quantum number $$n$$ to another with quantum number $$(n-1)$$. If $$n>> 1$$, the frequency of radiation emitted is proportional to :

Orbits of a particle moving in a circle are such that the perimeter of the orbit equals an integer number of de-Broglie wavelengths of the particle. For a charged particle moving in a plane perpendicular to a magnetic field, the radius of the $$n$$th orbital will be proportional to

The wavelengths involved in the spectrum of deuterium $$\left( _{ 1 }^{ 2 }{ D } \right) $$ are slightly different from that of hydrogen spectrum, because

The gyromagnetic ratio of an electron in an $$H-$$atom, according to Bohr model, is:-

The ionization energy of hydrogen atom is $$13.6\ eV$$. Hydrogen atoms in the ground state are excited by electromagnetic radiation of energy $$12.1\ eV$$. How many spectral lines will be emitted by the hydrogen atoms?

Calculate the radius of the nth orbit

Consider Bohr's theory for hydrogen atom. The magnitude of angular momentum, orbit radius and frequency of the electron in $$n^th$$ energy state in a hydrogen atom are, $$r$$ and $$f$$ respectively. find out the value of $$X$$, if ($$frl$$) is directly proportional to $$n^x$$.

Electron in a hydrogen atom is replaced by an identically charged particle muon with mass $$207$$ times that of electron . Now the radius of K shell will be 

There are some atoms in ground energy level and rest of all in some upper energy level in a gas of identical hydrogen like atoms. The atoms jump to higher energy level by absorbing monochromatic light of photon energy $$1.89\ eV$$ and this emit radiations of $$3$$ photons energies. Find the principal quantum number of initially excited level.

Ionization potential of hydrogen is $$13.6$$ volt. If it is excited by a photon of energy $$12.1eV$$, then the number of lines in the emission spectrum will be: