question_answer

Pauli's exclusion principle states that [MNR 1983; AMU 1984]

A)                 Two electrons in the same atom can have the same energy

B)                 Two electrons in the same atom cannot have the same spin

C)                 The electrons tend to occupy different orbitals as far as possible

D)                 Electrons tend to occupy lower energy orbitals preferentially

E)                 None of the above