Lan atom woth 3 elevtrons in the outermost shell may have a total of electrons all together
Added by Shane M.
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Lanthanides have the general electron configuration [Xe] 4f^n 6s^2. The outermost shell typically includes the 6s and possibly 5d electrons. Having 3 electrons in the outermost shell suggests the configuration 6s^2 5d^1 or 6s^2 4f^1 (less common for outermost Show more…
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