Question:
The monomer of Teflon is X. The number of fluorine atoms in X is
The monomer of Teflon is X. The number of fluorine atoms in X is
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The prefix "tetra" in the name tetrafluoroethylene literally means "four." This is a direct giveaway for the number of fluorine atoms attached to the carbon double bond.
Updated On: Jul 1, 2026
- $2$
- $3$
- $4$
- $1$
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The Correct Option is C
Solution and Explanation
Teflon, used for non-stick coatings, is a polymer chemically known as Polytetrafluoroethylene (PTFE).
1. Identifying the Monomer:
The name "Polytetrafluoroethylene" implies that the polymer is made of many "tetrafluoroethylene" units. Therefore, the monomer $X$ is
tetrafluoroethylene.
2. Molecular Structure of X: Tetrafluoroethylene is an alkene where all four hydrogen atoms of ethylene ($C_2H_4$) are replaced by fluorine atoms. The structural formula is: $$F_2C = CF_2$$
3. Counting Fluorine Atoms: By looking at the formula $C_2F_4$:
• There are $2$ carbon atoms.
• There are
4 fluorine atoms.
Thus, the number of fluorine atoms in the monomer $X$ is 4.
tetrafluoroethylene.
2. Molecular Structure of X: Tetrafluoroethylene is an alkene where all four hydrogen atoms of ethylene ($C_2H_4$) are replaced by fluorine atoms. The structural formula is: $$F_2C = CF_2$$
3. Counting Fluorine Atoms: By looking at the formula $C_2F_4$:
• There are $2$ carbon atoms.
• There are
4 fluorine atoms.
Thus, the number of fluorine atoms in the monomer $X$ is 4.
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