Ionic Bonding

Beryllium will ____ valence electrons when forming an ionic bond.

• lose 4
• gain 4
• lose 2
• gain 2

Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?

• There are 2 bromide ions for every magnesium ion
• Bromide has a 2- charge
• Bromide has a 2+ charge
• There are 2 magnesium ions to every bromide ion

Which is the correct chemical formula for aluminum sulfide?

• AlS

• Al₃S₂

• S₃Al₂

• Al₂S₃

What is the chemical formula for aluminum fluoride?

• AlF
• Al₂F₃
• AlF₃
• Al₃F₂

Metals tend to 

• gain electrons
• lose electrons

What is the correct formula for the compound, lithium oxide?

• LiO
• Li₂O
• LiO₂
• Li₂O₂

What is the charge of ion "X" in the formula XF₃?

• +3

• -3

• +1

• -1

What is the charge of ion "X" in CaX?

• +1

• -1

• +2

• -2

Which of the following pairs of elements will NOT form an ionic compound?

• sodium and fluorine

• phosphorous and aluminum

• potassium and magnesium

• strontium and oxygen

Ionic compounds are usually formed from _____.

• two nonmetals.

• a metal and a nonmetal.

• two metals.