The Periodic Table - Check Your Knowledge

Name for the group I metals is _____.

The ____ metals are the elements in the middle of the periodic table.

The ____ number is the sum of the protons and neutrons.

The ____ gases are considered inactive.

The horizontal rows are termed ____.

Most elements are ____, in The Periodic Table.

Nonmetals tend to form ions with a ____

charge.

The are the most active nonmetals are called ______.

Name for the group II metals is _____.

An element's atomic number is the number of ____ each atom has.