Question

Which of the following statements is correct with respect to electron spin?

a. The two electrons in one orbital must have opposite spin.
b. The two electrons in one orbital must have the same spin.
c. The two electrons in one orbital can have either opposite or the same spin.
d. The two electrons in one orbital repel each other if they have opposite spin.
e. The two electrons in one orbital attract each other if they have the same spin.

Answer 1

E is the answer. Hope this helps.