Complete the sentence. Select all that apply. In the vertical columns of the periodic table: the number of shells Increases from top to bottom all the physical properties are identical atomic weight Increases from top to bottom outer shell electrons increase from top to bottom

In the vertical columns of the periodic table, also known as groups or families:<br /><br />- The number of shells increases from top to bottom. (Correct)<br />- Atomic weight generally increases from top to bottom. (Correct)<br /><br />The other options are incorrect because:<br /><br />- All the physical properties are not identical; elements in the same group have similar chemical properties but can have different physical properties.<br />- Outer shell electrons do not increase from top to bottom; elements in the same group typically have the same number of outer shell electrons.