Periodic Table Terminology

How many groups are in the periodic table?

Metals are good conductors of electricity and heat. 

How many periods does the Periodic Table have?

Indicates the number of valence electrons that an atom has. 

Indicates the number of energy levels that an atom has.

Elements at the bottom were pulled out to keep the table from being too long are called

First group in the periodic table is referred to as the

Elements in groups 3 - 12 are called

Halogens are elements with properties that fall between those of metals and nonmetals. 

Second group of the periodic table is referred to as the

Atomic radius increases as you go from left to right on the periodic table

Elements of the same group have similar properties because they have the same number of protons

Most elements are___.

Group 18 is unreactive and called the 

Group 17 is also called