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Which out of the following molecules hav...

Which out of the following molecules have covalent bonds
`(i)CaCl_(2)(ii)NH_(3)(iii)n MgO(iv)PCl_(5)` ?

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The correct Answer is:
A
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Which of the following molecules behave as electrical dipoles ? (i) CCl_(4) (ii) CHCl_(3) (iii) BF_(3) (iv) H_(2)O (v) BeF_(2) (vi) NH_(3)

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Which of the following molecule is nonpolar? (i) PbCl_4 (ii) BF_3 (iii) SnCl_2 (iv) CS_2

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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -COVALENT AND CO-ORDINATE BONDS
  1. HF is polar while F(2) is non-polar. Explain.

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

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

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  4. What are SI units of dipole moment?

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

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  6. Why do covalent molecules have definite geometries ?

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

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

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

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

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

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

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

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

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

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

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

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  18. Why do covalent molecules have definite geometries ?

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  19. (a) What is depoole moment ? (b) What are the units of dipole moment...

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  20. (a) Explain sigma and pi bonds with suitable examples, (b) A pi bond...

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