Structure of At...

An ionic atom equivalent to hydrogen atom has wavelength equal to $$\dfrac{1}{4}$$ of the wavelengths of hydrogen lines. The ion will be

The third line of Balmer series of an ion equivalent to hydrogen atom has wavelength of $$108.5nm$$. the ground state energy of an electron of this ion will be

The frequency of the characterstic X ray of $$K_a$$ line of metal targent 'M' is $$2500 cm^{-1}$$ and the graph between $$\sqrt { v } $$ Vs 'z' is as follows, then atomic number of M is?

The mass of two moles of nitrogen atom is_____

Angular momentum in second Bohr orbit of H-atom is $$x$$. Then find out angular momentum in 1st excited state of $${Li}^{+2}$$ ion:

If one were to apply Bohr's model to a particle of mass 'm' and charge 'q' moving in a plane under the influence of a magnetic field 'B', the energy of the charged particles in the $$n^{th}$$ level will be:

Assuming Bohr's model for $$ Li^{++} $$ atom, the first excitatio energy of ground state of $$ Li^{++} $$ atom is

The average life of an excited state of hydrogen atom is of the order $${ 10 }^{ -8 }s$$. The number of revolution made by an electron when it is in state n= 2 and before it suffers a transition to state n = 1 are

The wavelength of the first member of the Balmer series in hydrogen spectrum is $$x$$ $$\mathring{A}$$. Then the wavelength (in $$\mathring{A}$$) of the first member of Lyman series in the same spectrum is

In a hypothetical system a particle of mass $$m$$ and charge $$-3q$$ is moving around a very heavy particle having charge $$q$$. Assuming Bohr's model to be true to this system, the orbital velocity of mass $$m$$ when it is nearest to the heavy particle is