What do you notice about the number of energy levels or shells as you move down a group or column?

( H --%26gt; Li --%26gt; Na )

What do you notice about the number of energy levels or shells as you move down a group or column?
The energy level or shell increase one by one as atomic number increases by group.



The energy level or shell remains the same (except in Group B) as atomic number increases by column.

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