What do you understand by the term “non-stoichiometric hydrides”? Do you expect this type of the hydrides
to be formed by alkali metals? Justify your answer.
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Answers
Answer:
Explanation:
In non stoichiometric hydrides, the ratio of the metal to hydrogen is fractional and does not correspond to actual formula. Their composition varies with temperature and pressure. TiHx (x=1.8 to 2) and ZrHx (x=1.30 to 1.75) are examples of non stoichiometric hydrides. d and f block elements form such types of hydrides.
Alkali metals readily lose their valence electron and act as strong reducing agents. The electrons lost by alkali metals are gained by H to form ionic hydrides in which the ratio of alkali metals to hydrogen is fixed. Hence, alkali metals form only stioichiometric hydrides.
Answer:
the hydride of element which do not obey law of constant composition is non stoichiometric hydride .Alkali metal do not form non stoichiometric compound
Explanation:
alkali metal combine with hydrogen in ratio (1:1) to form MH type compound .while in case of d block and f block hydride the ratio with hydrogen and metal combine varies with the temperature and the pressure .