Question

What is the ratio by number of atoms of hydrogen and oxygen in water?
A.) 2:3
B.) 2:1
C) 3:2
D.) 1:4​

Answer 1

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The ratio by number of atoms of hydrogen and oxygen in water is

2 : 1

Hence Option-B is correct.

Answer 2

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The ratio of by number of atoms of hydrogen and oxygen in water is

2 : 1

$\ H_2O$

2 atoms of hydrogen and 1 atom of oxygen.

So, option b) 2 : 1 is correct ✔️