Chemical bonding

What combination of elements will form a covalent compound?

• Metal and metal.

• Metal and nonmetal.

• Nonmetal and nonmetal.

What charge does magnesium take on?

• +1

• +2

• +3

• magnesium iodide

• magnesium diiodide

• monomagnesium diiodide

Ionic bonds are between...

• nonmetals and nonmetals
• carbon and oxygen
• metals and nonmentals
• hydrogen and chlorine

What are valence electrons?

• sum of the protons and neutrons
• protons minus electrons
• electrons in the inner shells
• electrons in the outer shell

If an atom gains two electrons what charge will it have?

• -2
• -1
• +1
• +2

How many valence electrons does oxygen have?

• 2
• 4
• 5
• 6

Bonding in diamond is

• covalent

• ionic

• dipole

• metallic

Ionic Solids Have

• a low melting point

• a moderate melting point

• a high melting point

• none of these

The bond between ice molecules is

• ionic

• covalent

• a hydrogen

• metallic