Chemical Bonding Unit

What is a valence electron?

• an electron that is found in the outermost shell of an atom.

• an electron found in the innermost shell of an atom.

• an electron found in the middle shell.

What is the number of valence electrons for Carbon (Group 14)?

Mathematical Equivalence

ON

What is the number of valence electrons for Neon and the other Noble Gases?

Mathematical Equivalence

ON

A covalent bond forms when atoms ___________ electrons.

• gain

• share

• increase

• transfer

Which type of bond has a transfer of an electron from on atom to another?

• Polar Covalent 
• Non Polar Covalent
• Ionic
• Metallic

How many valence electrons in this structure?

• 6
• 5
• 4
• 7

Ionic bonding is between a

• nonmetal and nonmetal

• metal and nonmetal

• metal and metal

• Depends on the situation

Which category of elements usually form negative ions?

• metals

• nonmetals

• metalloids

• noble gases

What charge would a potassium (K) ion have?

• +1

• -1

• +2

• -2

What usually forms the positive ion?

• Metal

• Nonmetals

• None