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Why is water molecule polar ?...

Why is water molecule polar ?

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Oygen is more electronegative (EN = 3.5) than hydrogen (EN 2.1) hence, O- H bond is polar. In the water molecule, two polar O-H bonds are present which are held together at an angle of `104.5^(@)`. Due to the resultant of these two dipoles, water molecule is polar and has an dipole moment of 1.84 Debye:
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NCERT EXEMPLAR-HYDROGEN-SHORT ANSWER TYPE QUESTIONS
  1. Explain why HCl is a gas and HF is a liquid ?

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  2. When the first element of the periodic table is treated with diox...

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  3. Rohan heard that instructions were given to the laboratory attend...

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  4. Given reason why hydrogen resembles alkali metals ?

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  5. Hydrogen generally form covalent compounds. Give reason

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  6. Why is the ionisation enthalpy of hydrogen higher than that of sod...

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  7. Basic pricinple of hyrogen economy is transpotation and storage of ...

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  8. What is the importance of heavy water ?

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  9. Write the Lewis structure of hydrogen peroxide .

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  10. An acidic solution of hydrogen peroxide behaves as an oxidising ...

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  11. With the help of suitable examples, explain the property of H(2)O(2...

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  12. Why is water molecule polar ?

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  13. Why does water show high boiling points as compared to hydrogen su...

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  14. Why can dilute solutions of hydrogen peroxide not be concentrated b...

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  15. Why is hydrogen peroxide stored in wax lined bottles?

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  16. Why does hard water not from lather with soap ?

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  17. Phosphoric acid is perferred over sulphuric acid in perparing hyd...

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  18. How will you account for 104.5^(@) bond angle in water ?

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  19. Write redox reactions between fluorine and water.

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  20. Write two reactions to explain amphoteric nature of water .

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