The smallest particle of an element is a(n):

Isotopes have:

These are the elements in the first row at the bottom of the periodic table that are part of transition metals.

The second row of transition metals under the periodic table that are radioactive.

An atom of Copper has 29 protons, 29 electrons and 35 neutrons, what is its atomic mass number?

Each vertical column on the periodic table is called:

Elements to the right of the zigzag line are:

The physical and chemical properties of elements change greatly:

Metallic properties _________________________ from left to right on the periodic table.

This element is the basis for life.

Metals are:

The second energy level of an atom can hold how many electrons?

Which element is in Period 4 and has 7 electrons in the outermost energy level?

What period is K (potassium) in?

Aluminum and Gallium are members of what family?

Lithium, Sodium and Potassium are all member of what family?

An element with different numbers of protons than electrons is an:

The periodic table is arranged by:

The element with no neutrons is:

Metalloids have properties: