" Number of electrons present in a manganese atom having quantum numbers "l=1,m=0" and "s=+1/2" is "

The number of electrons present in Co^(2+) having azimuthal quantum number l=1 is ,

" The maximum number of electrons in "K" atom "(Z=19)" with quantum numbers "n=3,m=+1,s=+(1)/(2)" is "

How many electrons in an atom have the following quantum numbers? n=4, m_(s)= -1//2

Calculate the total number of electrons present in an atom of Cr(Z=24) ,with Azimuthal Quantum number l=2