Question

The ionic compound containing ${Ca}^{2+}$ and $(OH{)}^{-}$ would have the formula

• A. $CaOH$
• B. $C{a}_{2}OH$
• C. $Ca(OH{)}_2$
• D. $2CaOH$

Answer 1

The correct option is C

$Ca(OH{)}_2$

The formula of the ionic compound containing ${Ca}^{2+}$ and $(OH{)}^{-}$ can be calculated by,

Interchanging the valency

$1C{A}^{+2}$ $2O{H}^{-}$

Write interchanged number at the base

$C{a}_1$ $O{H}_2$

Write the formula of the compound

$Ca(OH{)}_2$