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HF is polar while F(2) is non-polar. Exp...

HF is polar while `F_(2)` is non-polar. Explain.

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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -COVALENT AND CO-ORDINATE BONDS
  1. Difine electronegativily.

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  2. Has electroegativity of of an element specific units ?

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  3. HF is polar while F(2) is non-polar. Explain.

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  4. How many sigma bonds and pi bonds are present in a benzene molecules ?...

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  5. Which out of the following molecules have covalent bonds (i)CaCl(2)(...

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  6. What are SI units of dipole moment?

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  7. Which type of elements take part in the bond formation ?

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  8. Why do covalent molecules have definite geometries ?

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  9. Give the shapes associated with the following molecules (i)AB(3)(ii)...

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  10. Presence of a lone pair of electrons distrots the geometry of a covale...

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  11. Bond angle in NH(3) is more than in H(2)O. Discuss

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  12. Define hybridisation. Explain sp^(2) hybridisation with suitable examp...

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  13. Draw the resonating structures fo CO(2) molecule.

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  14. Arrange H(2)O,NH(3) and CH(4) molecules in decreasing order of bond an...

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  15. How will you differentiate between covalent and coordinate bonds?

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  16. Which of the following has larger bond angle in each pair ? (i)CO(2)...

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  17. Indicate whether the following statement is true or false. Justify you...

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  18. Sodium metal vapprises on heating and the vapours have diatomic molecu...

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  19. Which of the following has maximum bond angle ? H(2)O,NH(3),CO(2),CH...

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  20. Why do covalent molecules have definite geometries ?

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