Periodic Table Organization

The vertical columns on the periodic table are called 

Elements in group 18 are very unreactive. They are said to be “inert”. We call these the

Elements in groups 3 through 12 have many useful properties and are called 

The elements that compose the stair step line are classified as 

How many valence electrons do all elements in family 17 have?

Elements in the second group have 2 outer shell electrons and are also very reactive. They are

This element does not match the properties of any other group so it stands alone. 

How many valence electrons do all elements in family two, on the periodic table, have?

Mendeleev organized his periodic table by

A complete and stable outer energy level contains how many electrons?

The elements in family 18 are classified as

Elements in group 17 are known as “salt formers”. They are called

The horizontal rows of the periodic table are referred to as 

Most of the elements in the periodic table are classified as 

Periodic means

These metals are extremely reactive; never found in nature in their pure form; Valence # is 1

The current periodic table is organized by