Let's identify the compound given by the formula [tex]\( Ca\left( HCO_3 \right)_2 \)[/tex].
1. Identify the Cation:
- The formula begins with [tex]\( Ca \)[/tex], which is the symbol for calcium. Therefore, the cation in this compound is calcium ([tex]\(Ca^{2+}\)[/tex]).
2. Identify the Anion:
- The part within parentheses, [tex]\(HCO_3\)[/tex], is the bicarbonate ion (hydrogen carbonate ion). Each [tex]\(HCO_3\)[/tex] has a charge of [tex]\(-1\)[/tex]. Since there are two [tex]\(HCO_3\)[/tex] ions, they balance out the [tex]\(+2\)[/tex] charge from the calcium ion.
3. Combine the Names:
- Since the cation is calcium and the anion is bicarbonate (or hydrogen carbonate), the name of the compound is calcium hydrogen carbonate or calcium bicarbonate.
4. Verify the Choices:
- The given options are:
- calcium chromate
- calcium chlorate
- calcium hydrogen carbonate or calcium bicarbonate
- calcium carbonate
- Out of these options, the correct name for [tex]\( Ca\left( HCO_3 \right)_2 \)[/tex] is calcium hydrogen carbonate or calcium bicarbonate.
The correct answer is:
calcium hydrogen carbonate or calcium bicarbonate
