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No such compound as 'h2o'.

If you mean 'H2O' , then it is water.

Note the use of capital letters.

When writing single letter elemental symbols, a CAPITAL letter is ALWAYS used. This is the recognised international standard.

NB For two letter elemental symbols, the first letter is ALWAYS a CAPIYAL letter, and the second letter is always lower case. . e.g.

Na = Sodium(Nadium ; Latin)

Zn = Zinc

Cl = Chlorine

et seq.,

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lenpollock

Lvl 17
7mo ago

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Yes, H2O is a compound made up of the elements hydrogen and oxygen. Mg, on the other hand, is the chemical symbol for the element magnesium.


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