WAEC Chemistry 2018 Objective — Question 46
Question 46 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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The total number of shared pairs of electrons in the compound shown below (H₂C=CH₂, ethene) is
- A. 5
- B. 6Correct
- C. 10
- D. 12
Explanation
Ethene (H₂C=CH₂) has 4 C–H single bonds (4 shared pairs) plus 1 C=C double bond (2 shared pairs) = 6 shared pairs of electrons.
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