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 (Ca 2+ ), 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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