" Find the number of electrons in the ground state of "N" -atom having "(n+1+m)" value of "2"

Number of unpaired electrons in the ground state of beryllium atom is

Find the maximum number of electrons in ground state configuration of Zn which have l = any positive integral value and m = any non zero value.

The number of unpaired electrons in the ground state of chromium atoms is...........

(a) Find the radius of Li(++) ions in its grounds state assuming Bohr's model to be valid. (b) Find the maximum angular speed of the electron of a hydrogen atom in a stationary orbit. (c ) Average lifetime of a H atom excited to n=2 state is 10^(-8) sec. Find the number of revolutions made by the electron on the average before it jumps to the ground state. (d) Calculate the magnetic dipole moment corresponding to the motion of the electron in the ground state of a hydrogen atom. (e) Using the known values for hydrogen atom, calculate : (i) radius of third orbit for Li^(+2) (ii) speed of electron in fourth orbit for He^(+)

" The maximum number of electrons in an atom which can have "(n+1)=4" is......."