Arrange the electrons represented by the following sets of quantum numbers in decreasing order of energy.
(i)`n=4, l=0, m_(l)=0, s=+1//2`, (ii) `n=3, l=1, m_(l)=1, s=-1//2`
(iii) ` n=3, l=2, m_(l)=0, s=+1//2`, (iv) `n=3, l=0, m_(l)=0, s=-1//2`

From the following sets of quantum numbers, state which are possible. Explain why the others are not possible. (a) n=0, l=0, m_(l)=0, s=+1//2 , (ii) n=1, l=0, m_(l)=0, s=-1//2 (iii) n=1, l=1, m_(1)=0, s=+1//2 , (iv) n=1, l=0, m_(l)=+1, s=+1//2

From the following sets of quantum numbers , state which are possible ? (i) n=0,l=0,m_(l)=1,m_(s)= +1//2 (ii) n=2,l=1,m_(l)=0,m_(s) = -1//2 (iii) n=2, l=0,m_(1)=3,m_(s) = +1//2 (iv) n=3,l=1,m_(l)=0,m_(s) = +1//2

From the following sets of quantum numbers , state which are possible ? (i) n=0,l=0,m_(l)=1,m_(s)= +1//2 (ii) n=2,l=1,m_(l)=0,m_(s) = -1//2 (iii) n=2, l=0,m_(1)=3,m_(s) = +1//2 (iv) n=3,l=1,m_(l)=0,m_(s) = +1//2

Which of the following sets of quantum numbers do not belong to 2p subshell? (i) n=2, l=1, m=+1, s=+1/2 (ii) n=2, l=0, m=0, s=-1/2 (iii) n=1, l=1, m=0, s=+1/2

Which of the following sate of quantum numbers is not permissible for an electron in an atom? (i) n = 1,l = 1, m_(l) 0, m_(s) =+ 1//2 (ii) n = 3, l = 1, m_(1) =- 2, m_(s) =- 1//2 (iii) n =1, l = 1, m_(l) = 0, m_(s) =+ 1//2 (iv) n = 2, l = 0, m_(l) = 0, m_(s) = 1

From the following sets of quantum numbers, state which are possible. Explain why the others are not possible. (i) n=0, l=0, m_(l)=0, m_(s)=+1//2 " " (ii) n=1, l=0, m_(l)=0, m_(s)=-1//2 (iii) n=1, l=1, m_(l)=0, m_(s)= +1//2 " " (iv) n=1, l=0, m_(l)=+1, m_(s)=+1//2 (v) n=3, l=3, m_(l)=-3, m_(s)=+1//2 " " (vi) n=3, l=1, m_(l)=0, m_(s)=+1//2