Write the formula of the ionic compound that forms between
a. copper(I) ions and chloride ions---CuCl
b. copper(II) ions and hydrogen sulfate ions--Cu(HSO4)2
c. lithium ions and iodide ions--LiI
d. cobalt(III) ions and phosphate ions---CoPO4
All are right.
Good work.
To determine the formula of an ionic compound that forms between two ions, you need to consider the charges of the ions involved.
a. Copper(I) ions have a charge of +1, and chloride ions have a charge of -1. To form a neutral compound, one copper(I) ion combines with one chloride ion, resulting in the formula CuCl.
b. Copper(II) ions have a charge of +2, and hydrogen sulfate ions have a charge of -1. Since the charges balance out, two copper(II) ions combine with one hydrogen sulfate ion, yielding the formula Cu(HSO4)2.
c. Lithium ions have a charge of +1, and iodide ions have a charge of -1. Just like in equation a, one lithium ion combines with one iodide ion to form LiI.
d. Cobalt(III) ions have a charge of +3, and phosphate ions have a charge of -3. The charges balance out, so one cobalt(III) ion combines with one phosphate ion to form CoPO4.
a. The formula of the ionic compound formed between copper(I) ions and chloride ions is CuCl.
b. The formula of the ionic compound formed between copper(II) ions and hydrogen sulfate ions is Cu(HSO4)2.
c. The formula of the ionic compound formed between lithium ions and iodide ions is LiI.
d. The formula of the ionic compound formed between cobalt(III) ions and phosphate ions is CoPO4.