Multiple Choice
How many fluorine atoms are present in one molecule of HF?
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3. Chemical Reactions
Molecular Formula
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How many chlorine atoms are present in one molecule of HCl?
A
1
B
2
C
4
D
0
Verified step by step guidance1
Identify the chemical formula given, which is HCl. This represents one molecule composed of hydrogen (H) and chlorine (Cl).
Understand that the subscript numbers in a chemical formula indicate the number of atoms of each element in one molecule. If no subscript is present, it means there is exactly one atom of that element.
In the formula HCl, there is no subscript after Cl, so there is exactly one chlorine atom in one molecule of HCl.
Therefore, the number of chlorine atoms in one molecule of HCl is 1.
Confirm that the answer choices include 1, which matches the number of chlorine atoms found in the molecule.
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