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Why is the ionisation enthalpy of hydr...

Why is the ionisation enthalpy of hydrogen higher than that of sodium ?

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The ionisation enthalpy of hydrogen higher than that of sodium .Both hydrogen and sodium have one electron in the valence shell. But the size of hydrogen is much smallar than that of sodium and hence, the ionisation enthaply of hydrogen is much higher `(1312 KJ mol^(-1))` than that of sodium `(496 KJ mol^(-1))`.
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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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