What are the spins of two electrons in an orbital ?

How many spin orientation are possible for an electron in an orbital ?

Which principle/rule limit the maximum no. of electrons in an orbital to two ?

When there are two electrons in the same orbital they have the spins

When there are two electrons in the same orbital they have ……. Spins

The order of filling of electrons in the orbital of an atom will be

How many spin orientations are possible for an electron in S - orbital?

a) An orbital can hold only two electrons b) An orbital must have electrons with opposite spins. Which is correct ?