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Explain why hydrogen is not placed with ...

Explain why hydrogen is not placed with the halogen in the periodic table.

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(i) Hydrogen resembles alkali metals as well as halogens,
(ii) Hydrogen resembles more alkali metals than halogens.
(iii) Electron affinity of hydrogen is much less than that of halogen atom. Hence the tendency to form hydride ion is low compared to that of halogens.
(iv) In most of its compounds hydrogen exists in +1 oxidation state. Therefore it is reasonable to place the hydrogen in group 1 along with alkali metals as shown in the latest period table published by IUPAC.
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FULL MARKS-HYDROGEN -Textual Evaluation Solved(II. Write brief answer to the following questions:)
  1. Explain why hydrogen is not placed with the halogen in the periodic ta...

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  2. Discuss the three types of Covalent hydrides

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  3. Predict which of the following hydrides is a gas on a solid (a) HCI (b...

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  4. Write the expected formulas for the hydrides of 4^(th) period elements...

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  5. Write chemical equation for the following reactions. (1) reaction of h...

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  6. Complete the following chemical reactions and classify them into (a) h...

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  7. Hydrogen peroxide can function as an oxidising agent as well as reduci...

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  8. Do you think that heavy water can be used for drinking purposes?

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  9. What is water-gas shift reaction?

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  10. Justify the position of hydrogen in the periodic table?

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  11. What are isotopes? Write the names of isotopes of hydrogen.

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  12. Mention the uses of heavy water .

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  13. Explain the exchange reactions of deuterium

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  14. How do you convert para hydrogen into ortho hydrogen ?

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  15. Mention the uses of deuterium.

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  16. Explain preparation of hydrogen using electrolysis.

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  17. A groups metal (A) which is present in common salt reacts with (B) to ...

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  18. An isotope of hydrogen (A) reacts with diatomic molecule of element wh...

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  19. NH3 has exceptionally high melting point and boiling point as compared...

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  20. Why interstitial hydrides have a lower density than the parent metal.

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