السؤال 65

Which formula-and-count pair correctly completes the label for a methane molecule?

C2H4, two carbon atoms
CH3, three hydrogen atoms
CH4, four hydrogen atomsالإجابة الصحيحة
C4H, four carbon atoms

الشرح

CH4 places a 4 after hydrogen, so one molecule contains one carbon atom and four hydrogen atoms. CH3 has only three hydrogen atoms, while C2H4 incorrectly doubles the carbon count.

الشرح

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