Question -
The chemical formula of calcium hydroxide is _________.
Options:
A .  CaOH2
B .  Ca(OH)2
C .  Ca2(OH)3
D .  CaO2
Answer: Option B : B Calcium hydroxideconsist of calcium ion and hydroxideion i.e. Ca2+ and (OH)−, which have a charge of +2 and -1respectively. SymbolCaOHCharge+2-1 On cross-multiplication and balancing the charge, we get the formula as Ca(OH)2.
Submit Your Solution hear: