O-LevelChemistryBonding & Structure5070/11 · May/June 2020 · Q111 Mark
The dot-and-cross diagrams for four compounds are shown. Which diagram is correct? (Note that only the outer shell electrons are shown.)
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Adot-and-cross diagram showing a carbon atom bonded to four hydrogen atoms with single bonds.
Bdot-and-cross diagram showing two carbon atoms with a double bond between them, each also bonded to two hydrogen atoms.
Cdot-and-cross diagram showing two oxygen atoms with a double bond between them.
Ddot-and-cross diagram showing a hydrogen atom bonded to a chlorine atom with a single bond.
✓ Correct answer
A: dot-and-cross diagram showing a carbon atom bonded to four hydrogen atoms with single bonds.
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