Question

true or false: two electrons can simultaneously occupy the same (n, l, m) orbital.

Explanation:

According to the Pauli exclusion principle, no two electrons in an atom can have the same set of four quantum numbers \(n\), \(l\), \(m_l\), and \(m_s\). For a given \((n, l, m_l)\) (orbital), the spin quantum number \(m_s\) can have two values (\(+\frac{1}{2}\) and \(-\frac{1}{2}\)). So two electrons can occupy the same \((n, l, m_l)\) orbital with opposite spins.

Answer:

A. true