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NCERT Class XI Chemistry Solutions

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Question : 15 of 40
Marks: +1, -0
Although both CO2CO_2 and H2OH_2O are triatomic molecules, the shape of H2OH_2O molecule is bent while that of CO2CO_2 is linear. Explain this on the basis of dipole moment.
Solution:  
Even though both CO2CO_2 and H2OH_2O are triatomic, but CO2CO_2 has zero dipole moment. It implies that CO2CO_2 has a symmetrical structure which is possible only when it is linear. However, H2OH_2O has a net dipole moment suggesting that the molecule is non-linear.
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