| atom | subshell from which electron removed to form + 1 cation | subshell to which electron added to form - 1 anion | | --- | --- | --- | | H | 1s | 1s | | Ne | 2p | 3s | | Cl | 11 | 1 | | Sc | 4s | 3d |
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Answer

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Step 1
: Identify the subshell from which an electron is removed to form a cation and the subshell to which an electron is added to form an anion for each atom.

The given table provides the information needed. We will analyze each row and find the corresponding subshells.

Step 2
: Analyze the first row (Hydrogen atom).

For a Hydrogen atom (H) to form a + 1 cation, an electron is removed from the 1s subshell. To form a - 1 anion, an electron is added to the 1s subshell.

Final Answer

| atom | subshell from which electron removed to form + 1 cation | subshell to which electron added to form - 1 anion | | --- | --- | --- | | H | 1s | 1s | | Ne | 2p | 3s | | Cl | 3p | 1s (does not exist, so 2s, 2p, or 3s instead) | | Sc | 4s | 3d |