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iamkingshaheed


A.Hydrogen Atom has 2 atoms. Ex:H2O H2O means 2 Hydrogen atoms,        O means 1 oxygen atom.

B.Molecule  A Molecule is 2 Atoms.

C.Diatomic Oxygen   Diatomic Oxygen is a molecule,it has 2 atoms.

D.Oxygen Has 1 atom,H2O 2 Hydrogen 1 OXYGEN.

Therefor your answer is D.Oxygen Atom.
onyebuchinnaji

The smallest particle representing water molecule is oxygen atom.

The chemical formula for water molecule is written as follows;

H₂ + O₂ -----> 2H₂O

The water molecule contains 2 atoms of hydrogen and 1 atom of oxygen.

The particles present in water molecule is calculated as follows;

2 atoms of hydrogen = 2 x 6.02 x 10²³ = 1.204 x 10²⁴ particles

1 atom of oxygen = 1 x 6.02 x 10²³ = 6.02 x 10²³ particles

Thus, we can conclude that the smallest particle representing water molecule is oxygen atom.

Learn more here:https://brainly.com/question/3610433

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