For each atom in the table below, write down the subshell from which an electron would have to be removed to make a +1 cation, and the subshell to which an electron would have to be added to make a -1 anion. The first row has been completed for you. atom H Na Ar Cd subshell from which electron removed to form +1 cation 1s 0 0 subshell to which electron added to form -1 anion X 1s 0 0 0 5 ob Ar

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