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Which bond is more polar in the following pairs of molecules (a) H_(3)C- H, H_(3)C- Br (b) H_(3)C- NH_(2), H_(3)C-OH (c ) H_(3)C- OH, H_(3)C- SH |
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Answer» Solution :(a) C-Br bond is more polar than C-H. Because the electronegativity of Br is more than H. (B) C-O bond is more polar than C-N. Because the electronegativity of O is more than N. (c ) Bond POLARITY of C-O bond is more than C-S bond, Because the electronegativity of S is less. Electronegativity in period is increase. `((H),(2.1))((C),(2.5))((N),(3.0))((O),(3.5)) ((F),(4.0))` Electronegativity in GROUP is decrease. `(N gt P gt "As"), (O gt S gt Se), (F gt Cl gt Br)` The extend of bond polarity `prop` deference of electronegativity. `C - H lt C-N lt C-O lt C-F` `C- H lt C- O lt C-F lt C-Cl` `C- H lt C- S lt C - O lt C - F` `rarr` Increase polarity of bond `rarr` |
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