Question

Which of the following sets of quantum numbers are not allowed? For the sets that are incorrect, state the restriction that forbids it. For the sets that are correct, give the orbital designation (eg. 1s, 2px). Correct/ incorrect restriction or orbital designation n,l ,ml, ms

i) 5 3 +1 0

ii) 2 2 -1 -1/2

iii) 7 5 -4 -1/2

iv) 1 0 -1 +1/2

b) How many electrons in an atom can have the following quantum numbers?

i) n = 2 & l = 0 ml = +1 ms = –½

ii) n = 5 & l = 1

iii) n = 4 & ml= +1

Answer 1