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Which of the following compounds is polar?

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Question: Which of the following compounds is polar?

Options:

  1. CCl4
  2. CO2
  3. HCl
  4. CH4

Correct Answer: HCl

Solution: 

HCl is a polar molecule due to the difference in electronegativity between hydrogen and chlorine.

Which of the following compounds is polar?

Practice Questions

Q1
Which of the following compounds is polar?
  1. CCl4
  2. CO2
  3. HCl
  4. CH4

Questions & Step-by-Step Solutions

Which of the following compounds is polar?
  • Step 1: Understand what a polar molecule is. A polar molecule has a positive end and a negative end due to uneven sharing of electrons.
  • Step 2: Identify the elements in the compound HCl. It consists of hydrogen (H) and chlorine (Cl).
  • Step 3: Look up the electronegativity values of hydrogen and chlorine. Electronegativity is a measure of how strongly an atom attracts electrons.
  • Step 4: Compare the electronegativity values. Chlorine has a higher electronegativity than hydrogen, meaning it attracts electrons more strongly.
  • Step 5: Determine the bond type. Since there is a significant difference in electronegativity between H and Cl, the bond in HCl is polar.
  • Step 6: Conclude that HCl is a polar molecule because the electrons are not shared equally, creating a positive end (H) and a negative end (Cl).
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