The number of p-electrons in bromine atom is:

An atom has its K and L shells completely filled and seven electrons in the M-shell. Find out the total number of p-electron in an atom ?

An atom has its K and L shells completely filled and five electrons in M shell. Find out the total number of p electrons in the atom ?

The number of electrons required to deposit 1 gram atom of aluminium (at wt = 27) from a solution of AlCl_3 will be ?