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Sodium hydroxide is NaOH and contains three atoms, one each of sodium, hydrogen and oxygen.
NH3; One atom of nitrogen and three atoms of hydrogen.
There is one hydrogen atom in one formula unit of NaOH.
2 Carbon atoms, 4 Hydrogen atoms, 2 Oxygen atoms
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
Sodium hydroxide is NaOH and contains three atoms, one each of sodium, hydrogen and oxygen.
C6H12O6. Six carbon atoms, 12 hydrogen atoms and six oxygen atoms.
7
3
There are five atoms
2
there are 3 in tottal
Some elements have isotopes - atoms with a different number of neutrons.
NH3; One atom of nitrogen and three atoms of hydrogen.
There is one hydrogen atom in one formula unit of NaOH.
1
2