Question

Which one of the following is NOT possible?

Options

• n = 4, I = 0, m_l = 0

• n = 3, I = 0, m_l = −1

• n = 2, l = 1, m_l = −1

• n = 3, l = 2, m_l = 0

Answer 1

n = 3, I = 0, m_l = −1

Explanation:

For a given value of azimuthal quantum number (l), the magnetic orbital quantum number (m_l) have values between −l and +l through 0.

In the value of m_l is −1 which is not possible as the azimuthal quantum number is zero.