Periodic Table Groups & Periods Quiz

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Which element is not a metal?

• H
• Re
• Al
• Ba

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Sulfur

Pure forms of these elements are stored in oil so they won't react with oxygen and water in the air.

• Alkali Metals
• Alkaline-earth metals
• Halogens
• Noble Gases

How many valance electrons does Iodine have?

• 6

• 16

• 7

• 17

The shaded portion of the periodic table in the picture represents....

• nonmetals
• metals
• metalloids
• gases

Elements in Group 13 are grouped together by having

• thirteen valence electrons

• three valence electrons

• solids and gases

• similar atomic masses

What is the name of the element with the symbol Co

• Copper
• Carbon
• Cobalt
• Chlorine

Which of the following is a member of the nonreactive group of gases with an octet (8) of valence electrons?

• Hydrogen

• Oxygen

• Krypton

• Nitrogen