What is the chemical formula for calcium carbonate?

it is CaCO3.

Calcium is located in Group 2 on the periodic table, and all group 2 elements are always a 2+ charge. carbonate, CO3, has a charge of 2-. the quick hand way of determining the charge for each compound is switching the charges of each element/ion. So now Ca and CO3 (the 3 should be a subscript btw) have 2 charges, however they have to be in the lowest multiple...so dividing by the common multiple, which is 2, you will get a 1 charge on the Ca and CO3. Therefore it is CaCO3

Calcium Carbonate Formula

Carbonate Formula

Calcium is an element with an ion charge/oxidation number of 2+. Carbonate is a polyatomic ion with an ion charge of 2-. Since the two ion charges cancel out or equal zero, the formula would be CaCO3(the three is a subscript.) the Ca is the symbol for Calcium and the "formula" for carbonate is CO3

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RE:

What is the chemical formula for calcium carbonate?

The best well explain answer(easy for a 8th grader to understand) will receive best answer and get the 10 points.

The most stable state for calcium is when it exists as a Ca2+ ion...carbonate is CO3 (2-)...so empirical formula for calcium carbonate is CaCO3

calcium stands for CA

carbonate is C (stands for carbon) and O (stands for oxygen)

since there are 3 oxygen atoms, it will be O3 (cube)

Thus, we write calcium carbonate as CaCo3

caco3

caCO3