Periodic Table

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Which types of elements have intermediate properties of metals and nonmetals?

• metals
• nonmetals
• metalloids
• gases

Which group of elements are the most reactive metals?

• alkali metals
• alkaline earth metals
• halogens 
• noble gases

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

An element with five valence electrons is

• phosphorus
• oxygen
• beryllium
• rubidium

Is Helium (He) metal, non-metal, or metalloid?

• metal
• non-metal
• metalloid

The elements in a column of the periodic table...

• have similar atomic numbers
• start with the same letter
• have similar properties
• are not related in any way

Two atoms that have the same number of protons but differ in the number of neutrons are known as this:

• Isotopes
• Ions

Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

How many Valance electrons does Iodine Have?

• 6
• 16
• 7
• 17