Ions & Ionic Compounds

If Magnesium and oxygen combine, what would the formula be?

• Mg_2O_2
• MgO_2
• MgO
• M^2O^2

If an atom loses 2 electrons, it will have a charge of...

• +2
• -2
• -
• +

Ionic bonding always takes place between 

• ions of opposite electrical charge
• ions of the same electrical charge
• ions of the same size
• ions of the same size and opposite charge

The correct name for the compound with the formula CaSO_4 is 

• calcium sulfur oxide
• calcium sulfide
• calcium sulfate
• calcium sulfur tetroxide

The only formula listed below that represents a radical (polyatomic) ion is...

• CO32-
• H2SO4
• Cl1-
• Na1+

The correct formula for magnesium oxide is 

• Mg_2O
• MgO
• MgO_2
• Mg_2O_3

The correct name for the salt with the formula CaI_2 is

• calcium diodide
• calcium iodide
• calcium iodine
• dicalcium iodine

A calcium atom has a tendency to ...

• lose one electron
• lose two electrons
• gain one electron
• gain two electrons

An ion that has a similar electron configuration to that of neon is 

• Cl^1-
• Na
• Na^+
• O ^1-

The charge on an ion is 

• always positive.
• always negative.
• either positive or negative.
• zero.