Which describes the atomic number of an atom?

Which best describes the atomic mass of an element?

An element that is dull, brittle,  and a poor conductor of heat would be what type of element

One of the subatomic particles in the nucleus can be described as having

protons are

To find the mass of an atom

What part of the periodic table tells how many electrons are in the outermost shell of an atom

How many electrons are in the outermost energy shell of a potassium atom?

What is the smallest unit of an element that still have the properties of that element?

Where would you locate non metals on the periodic table?

If calcium has 20 protons in each atom it will also have

Where are electrons found in an atom?

Metalloids that have properties of both metals and nonmetals are located where on the Periodic Table?

an electron

Atoms are made up mostly of 

An element is 

According to the Periodic Table, Argon is similar to Neon because they are 

In the Periodic Table a period represents

Elements in the same group will

nonmetals are located 

The noble gases are located in what group

All elements in period 3 have how many energy levels

How many valence electrons do each noble gas have?

Potassium has how many energy level?