User: How many electrons does barium have to give up to achieve a noble-gas electron configuration?

Weegy: go to this site [www.ptable.com] click on the orbitals tab move around the periodic table and pay attention to the filling patterns. notice... the left 2 columns fill the "s" orbitals? the right 6 columsn fill the "p" orbitals? where are "d" [ and "f" orbitals? the row # vs the principle quantum number for s and p electrons? (that's the # before the s and p.. 2s.. 2p.. 3s.. 3p... etc fyi) notice the quantum numbers are electrons are filled? n,L, mL, ? notice the pairing of electrons? ? in a box means 1 electron in that particular orbital ?? means 2 electrons with opposite spin in 1 orbital ]
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