Ionic bonding, covalent bonding and polarity

Front

The following ionic crystal has 6 Fe ions (red) and 9 O ions (blue). What is the formula for this ionic crystal?

Back

Fe₂O₃

Front

The following ionic crystal has 4 Sr ions (red) and 8 Br ions (blue). What is the formula for this ionic crystal?

Back

SrBr₂

Front

Nitrogen will form which of the following ions? Options: N, N^-3, N^-5, N⁺⁵

Back

N^-3

Front

Beryllium will ____ valence electrons when forming an ionic bond. Options: lose 4, gain 4, lose 2, gain 2

Back

lose 2

Front

How do the following two elements bond together?
Al³⁺  O^2-         
Options: AlO, Al₂O₃, Al₃O₆, Al₃O₂

Back

Al₂O₃

Front

If an element has an oxidation number of 2+, what does that say about it?

Back

I am losing 2 electrons

Front

Oxygen is in group 6 of the periodic table, which ion would it form?

Back

O^2-

Front

What is the formula of calcium oxide?

Back

CaO

Front

What molecule is this? Options: CO, CO2, C2O, C2O2

Back

CO2

Front

How many elements make up this compound?

Back

3