Question

HOLA!!!

I have a question, in Chemistry we represent Hydrogen gas as H2 and Oxygen gas as O2 then when we write the formula of water why do we write H2O and not HO ( as valency 2 gets cancel out)???? Explain in easy words.

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Answer 1

valency of hydrogen is 1 not 2

hydrogen never found in free state

so it react with other hydrogen for stabling.

That's why we show H2o not HO

may it helps u

Answer 2

Chemical formula of water is H2O basically means that water contains 2 atoms of Hydrogen and 1 atom of Oxygen.

Valency of H atom is 1 and that of O atom is 2 so one atom of oxygen shares its two electrons with two hydrogen atoms to form H2O

2 atoms of H forms one molecule of hydrogen gas,hence H2

2 atoma of O forma one molecule of oxygen, hence O2

Hope it did a little bit help to you