Structure of At...

Which of the following ions has the maximum magnetic moment?

The number of d-electrons retained in Fe²⁺ (At. No. of Fe = 26) ion is

In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter–orbit jumps of the electron for Bohr orbits in an atom of hydrogen?

The value of the energy for the first excited state of hydrogen atom will be

In a hydrogen atom, if the energy of an electron in the ground state is 13.6 eV, then that in the 2nd excited state is

The wavelength associated with a golf ball weighing 200 g and moving at a speed of 5 m/h is of the order

The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately

The number of d-electrons in Fe²⁺ (Z = 26) is not equal to that of the

If n and l are respectively the principal and azimuthal quantum numbers, then the expression for the calculation of the total no. of electrons in any energy level is

The number of photons of light having wave number x in 1J of energy source is (Planck’s constant = h, velocity of light = c)