Which of the following is not a linear polyatomic molecule?
A
CO2
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B
BeH2
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C
H2O
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D
C2H2
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Solution
The correct option is CH2O
The oxygen in H2O has 2 bond pairs and 2 lone pairs and shows tetrahedral electron cloud geometry. Since the oxygen contains two lone pair of electrons, its shape is bent.
For CO2 , C2H2 and BeH2 shape is linear.