Ca2+ has completely filled outer shell. Justify your answer.
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The chemical symbol – “Ca” indicates calcium element.
Atomic number of Calcium = 20
Electronic configuration – 1s2 2s2 2p6 3s2 3p6 4s2.
+2 charge of an element indicates two electrons remove from their electronic configuration.
Ca2+ electronic configuration - 1s2 2s2 2p6 3s2 3p6
From the above configuration, the outer shell of has fully filled electrons. Therefore, Ca2+ has completely filled electronic configuration.
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