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\(Na^+\) has completely filled K and L shells. Explain.
Atomic number of sodium \(=11\)
Number of protons \(=\)
Number of electrons \(=\)
Electronic configuration of \(Na\) \(=\)
Sodium atom (\(Na\)) to become stable and forms \(Na^+\) ion. Hence, it has completely filled K and L shells.
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