The number. of polar covalent bonds in ethanol:
Correct answer: B. 2
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
Ethanol (C2H6O) contains two polar covalent bonds due to the electronegativity difference between carbon and oxygen (C-O bond) and between oxygen and hydrogen (O-H bond). These differences cause uneven electron sharing, resulting in polarity. The other bonds in ethanol, such as C-H bonds, are nonpolar due to similar electronegativity values of carbon and hydrogen. Therefore, options A, C, and D are incorrect as they misrepresent the number of polar covalent bonds in ethanol.
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