Question : What is the correct formula for calcium hydroxide?
Option 1: CaOH
Option 2: Ca(OH)4
Option 3: Ca(AlOH)4
Option 4: Ca(OH)2
Correct Answer: Ca(OH)2
Solution : The correct option is Ca(OH)2.
The correct chemical formula for calcium hydroxide is Ca(OH)2. It has one calcium (Ca) ion and two hydroxide (OH-) ions. In this ionic compound, the calcium ion has a positive two charge (Ca2+), and each hydroxide ion carries a negative one charge (OH−). The combination of one calcium ion and two hydroxide ions results in a neutral compound.
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