Explain how a molecule can have polar bonds but have no molecular polarity. Name the compounds...

Explain how a molecule can have polar bonds but have no molecular polarity. Name the compounds that have bond polarity but no molecular polarity ( out of CH4, CF4, NH3, NF3, H2O, OF2, CO2, CH2F2).

Solutions

Expert Solution

CH₄ having C-H bond polarity but the shape of the molecule is tetrahedral so it is not having moleclar polarity.

CF₄ having C-F bond polarity but the shape of the molecule is tetrahedral so it is not having moleclar polarity.

NH₃ having N-H bond polarity & the shape of the molecule is pyramidal so it is having moleclar polarity.

NF₃ having N-F bond polarity & the shape of the molecule is pyramidal so it is having moleclar polarity.

H₂O having O-H bond polarity & the shape of the molecule is angular so it is having moleclar polarity.

OF₂ having O-F bond polarity & the shape of the molecule is angular so it is having moleclar polarity.

CO₂ having O-C bond polarity & the shape of the molecule is linear so it is not having moleclar polarity.

CH₂F₂ having C-F bond polarity & the shape of the molecule is tetrahedral even though due to unsymmetry it is having moleclar polarity.

Therefore CH₄, CF₄ & CO₂ having bond polarity but no molecular polarity .

queen_honey_blossom answered 11 months ago

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