Periodic Table Review

Periods are the _______ on the periodic table.

The period number tells you the number of _______ that atom has.

Based on the image below, this element should be in period

Electrons in the outer shell are called _______ electrons.

Groups are the _________ on the periodic table.

The group number tells you the number of ________ that atom has.

Based on the image below, this element should be in group

By looking at this picture, you can tell that these elements are both in period

By looking at this picture, you can tell that these elements are both in group

Find Sodium (Na) on the periodic table. What is Sodium's period and group?