# How many chloride ions will be found in the formula for cobalt(II) chloride?

Precisely $2$.
$C o \left(I I\right)$ refers to a formal $C {o}^{2 +}$ ion. And thus we have $\text{cobaltous chloride, } C {o}^{2 +} + 2 \times C {l}^{-}$, $C o C {l}_{2}$.