Multiple Choice
Which of the following best describes the Lewis structure of (ethene)?
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1. A Review of General Chemistry
Lewis Structure
Multiple Choice
Which of the following best represents the Lewis structure of methane ()?
A
A central carbon atom triple-bonded to one hydrogen atom and single-bonded to one hydrogen atom
B
A central carbon atom double-bonded to two hydrogen atoms and single-bonded to two hydrogen atoms
C
A central carbon atom single-bonded to three hydrogen atoms and with one lone pair
D
A central carbon atom single-bonded to four hydrogen atoms, with no lone pairs on carbon
Verified step by step guidance1
Recall that methane (CH\_4) consists of one carbon atom bonded to four hydrogen atoms.
Determine the number of valence electrons: Carbon has 4 valence electrons, and each hydrogen has 1 valence electron, totaling 8 valence electrons for methane.
Apply the octet rule for carbon, which prefers to have 8 electrons around it, and the duet rule for hydrogen, which prefers 2 electrons.
Draw single bonds between the carbon atom and each of the four hydrogen atoms, using 2 electrons per bond, which accounts for all 8 valence electrons.
Verify that carbon has no lone pairs and that each hydrogen has a full valence shell, confirming the Lewis structure is a central carbon atom single-bonded to four hydrogen atoms with no lone pairs on carbon.
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