# What is the name of Ca(HCO_3)_3?

Well, $C a {\left(H C {O}_{3}\right)}_{2}$ is $\text{calcium bicarbonate}$.
The formula is certainly correct. As written, $C a {\left(H C {O}_{3}\right)}_{3}$ would imply a $C {a}^{3 +}$ ion, which is unknown. Why?