1E Unit 6.2 - Ionic Compounds: Names and Formulas

Beryllium will ____ valence electrons when forming an ionic bond.

• lose 4
• gain 4
• lose 2
• gain 2

In the chemical formula for an ionic compound, which item is written first?

• positive ion
• negative ion
• subscript
• the female

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 name for CaBr₂?

• Calcium Bromine
• Bromine Calcium
• Calcium Bromide
• Carbon and Bromine

Which is the correct formula for aluminum sulfide?

• AlS

• Al₃S₂

• S₃Al₂

• Al₂S₃

Which of the following is true for ionic bonding & ionic compounds?

• They must be made of ions with like charges.

• The negative ion must be written first.

• Compounds must have an overall charge of zero.

• They are made of metals and nonmetals.

• The positive ion must be written first.

Oxygen has _____ valence electrons.

Metals tend to 

• gain electrons
• lose electrons

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

• LiO
• Li₂O
• LiO₂
• Li₂O₂

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