Chemical bonds

Ionic bonds form between ---

• nonmetals.

• metals and nonmetals.

• Metals

How many valence electrons in this structure?

• 6
• 5
• 4
• 7

What is the name for CaS?

• calcium sulfate
• calcium sulfide
• calcium monosulfide
• monocalcium monosulfide

Which of the following is ionic?

• NO₂
• MgO
• CO
• CH₄

What is the name of this element?

• Helium
• Hydrogen
• Argon
• Silver

What is the name of this element?

• Lithium
• Boron
• Carbon
• Neon

How many valence electrons?

• 2
• 3
• 5
• 10

The innermost energy level has a maximum of how many electrons?

• 1

• 2

• 6

• 8

What is this element?

• Beryllium (atomic #4)

• Boron (atomic #5)

• Carbon (atomic #6)

• Nitrogen (atomic #7)

How many valence electrons?

• 2

• 3

• 4

• 5