What are the quantum numbers of barium?

Barium (Ba) has the atomic number 56, and its electron configuration is [Xe] 6s². The quantum numbers for its outermost electrons are: for the two 6s electrons, the principal quantum number (n) is 6, the azimuthal quantum number (l) is 0 (s orbital), the magnetic quantum number (m_l) is also 0, and the spin quantum number (m_s) can be +1/2 or -1/2 for each electron. Thus, the quantum numbers for the two 6s electrons in barium are (6, 0, 0, +1/2) and (6, 0, 0, -1/2).