Hydrogen forms both H+ ion and H- ion. Explain. from Chemistr
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    Hydrogen

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    11. Hydrogen forms both H+ ion and H- ion. Explain.

    Hydrogen can easily lose the only electron present in the valence shell (1s1) and can exist as H+ ion. It can also take up one electron from outside to attain a stable configuration and therefore it exists as H-.
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    12.

    What happens when water is added to hydrolith?

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    13. Can dihydrogen act as an oxidising agent? If so, give an example.
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    14.

    What is the molecular mass of a compound formed when tritium is burnt in air?

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    15.

    Why ionic hydrides are kept away from moisture?

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    16.

    Ionic hydrides are generally used to remove traces of water from organic compounds. Explain.

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    17.

    Out of H2 and D2 which has higher boiling point and why?

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    18.

    Give one use of liquid hydrogen. 

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    19.

    Why dihydrogen (H2) is not preferred for filling of balloons and airships?

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    20.

    What is nascent hydrogen?

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