Valence Electrons

Electrons are arranged around the nucleus in regions called

• Energy floors

• Energy shelves

• Energy levels

• Energy clouds

What's the most amount of energy levels an atom can have?

• 5

• 7

• 6

• 4

The outermost energy level is called the

• Appearance shell

• Ultimate shell

• Electron shell

• Valence shell

Electrons in the last shell are called

• Valence electrons

• Hard electrons

• Outside electrons

• Best electrons

True or False

Some groups have the same number of valence electrons

• True

• False

How many electrons are in Group 15?

• 15

• 5

• 10

• 37

How many valence electrons are in Group 2?

• 1

• 2

• 3

• 4

Diamonds are made up of what element

• Glass

• Krypton

• Diamond

• Carbon

What gas makes up 78% of our atmosphere?

• Oxygen

• Chlorine

• Hydrogen

• Nitrogen

How are elements grouped on the periodic table?

• Physical appearance

• Number of protons

• Number of valence electrons

• Number of valence neutrons