Chemistry Question- Compounds, Ions?

Jim Lehey

New member
An unknown element X forms an oxide with the formula X2O3.

a) What is the valence (combined capacity) of element X?
b) What would be the formula of the compound that element X would form with chlorine?

An unknown element Z reacts with aluminium to form the compound AlZ3.

a) What is the valence of element Z?
b) What would be the formula of the compound that element Z would form with Li?

An unknown element X forms a salt with the formula XBr2.

a) What is the valence of element X?
b) What would be the formula of the compond that element X would form with the phosphate ion?
 
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