Why are there empty spaces in the rows on the periodic table?(1 point)

Question

Responses

So that elements with similar masses are right next to each other.
So that elements with similar masses are right next to each other.

Because elements of the same size are found in the same rows.
Because elements of the same size are found in the same rows.

So that elements with similar properties are aligned in the same column.
So that elements with similar properties are aligned in the same column.

Because the elements on the periodic table are arranged by order of discovery.

Answer 1

The correct response is:

So that elements with similar properties are aligned in the same column.

The empty spaces in the periodic table indicate where undiscovered or yet-to-be-classified elements would fit based on their properties, thus maintaining the organization of the table according to periodic trends.