H2O (water) has 2 hydrogen atoms and 1 oxygen atom.
The first one is the answer
isotopes of an atom have different number of neutrons . the number of protons are not different in isotopes of an atom
The factors that affect geometry of a molecule are
> The number of bonding electron pairs around the central atom.
> The number of pairs of non-bonding ("lone pair") electrons around the central atom.
Answer:
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