What are stoichiometric hydrides ? Why do s block elements form stoichiometric hydrides. Also state reasons for the formation of such hydrides. (if any)
Answers
Answer:
Alkali metals form stoichiometric hydrides. These hydrides are ionic in nature. Hydride ions have comparable sizes (208 pm) with alkali metal ions. Hence, strong binding forces exist between the constituting metal and hydride ion. As a result, stoichiometric hydrides are formed.
Stoichiometric hydrides are those hydrides of elements, usually metals, that follow the "law of constant composition"
It means that the chemical composition or the proportion of hydrogen and metal in the compound does not vary with the source and method of preparation and is constant.
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Most s-block elements form stoichiometric hydrides.
These hydrides are ionic in nature. Hydride ions have comparable sizes (208pm) with alkali metal ions. Hence, strong binding forces exists between the constituent metal and hydride ion. As a result, stoichometric hydrides are formed.
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PS- I goog.led it
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