Multiple choice

Which of the following compounds contain(s) polar bonds only? A. NH4Cl, B. NH3,

C. HCN, D. H2O2

  1. Only A

  2. Only B

  3. A, B and C

  4. B, C and D

  5. A, C and D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

NH4Cl: The N-H bond is polar due to electronegativity difference between N (3.0) and H (2.1).NH3. The N-H bond is polar due to electronegativity difference between N (3.0) and H (2.1). HCN: The H-C and C-N bonds are polar due to electronegativity difference between C (2.5) and N (3.0) for H-C bond as well as between C (2.5) and H (2.1) for C-N bond.

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