Question

Which of the following conclusions cannot be drawn on the basis of Pauli's exclusion principle?

• A. An orbital contains a maximum of 2 electrons
• B. The electrons in an orbital possess opposite spins
• C. The maximum number of electrons in a shell is $2n^2$
• D. The maximum number of unpaired electrons in a sub shell is equal to the number of orbitals in it

Answer 1

The correct option is D The maximum number of unpaired electrons in a sub shell is equal to the number of orbitals in it

According to Pauli's principle, no two electrons can have same four quantum numbers. Option (D) is incorrect. It cannot conclude the number of unpaired electrons in a sub-shell.