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Chemical Formula of Ionic Compounds

The chemical ...

Question

The chemical formula of Calcium Hydroxide is $C a O H_{2}$ .

A

True

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B

False

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Solution

The correct option is B
False

The name of the given compound has two parts. One is Calcium ion and the other is Hydroxide ion. Calcium ion is $C a^{2 +}$ and Hydroxide ion is $O H^{-}$ . By using the criss-cross method, we can get the formula as $C a (O H)_{2}$ . $O H$ should be in the parenthesis because the $- 1$ charge is not just on $H$ but on the entire $O H$ .

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$C a O + H_{2} O \to C a (O H)_{2}$ is an example of a balanced chemical equation.

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