Periodic Table Basics

The periodic table has ____ periods (rows) and ____ groups (columns).

Which scientist created the first periodic table?

Metals are found on the ____ side of a periodic table and nonmetals are found on the ___ side.

Atomic number tells you _________.

Which element has an atomic number of 12?

Which element has an atomic mass of 10.81?

You can find the _____ an atom has by subtracting "atomic mass - number of protons".

The first energy shell can hold up to __ electrons. The second energy shell can hold up to __ electrons. The third energy shell can hold up to __ electrons.

Why do atoms create bonds with other atoms?

When two or more different types of atoms bond, they create a _____ such as NaCl.