Question

alkali and alkaline earth metal hydrides are called salt like hydrides​

Answer 1

Answer:

they are more electropositve than hydrogen.

the exceptions are beryllium hydride and magnesium hydride.

they have high density due to their stability.

Explanation:

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Answer 2

Alkali and alkaline earth metal hydrides are called salt-like hydrides because Alkali metals and alkaline earth metals are largely electropositive due to low ionization energy. Thus, they can construct ionic hydrides, e.g., NaH, KH etc.

• The ionic hydrides are white solids in nature with elevated melting points, and all the alkali metal hydrides possess sodium chloride crystal configurations. Because they correspond to the salts of the alkali and alkaline crusts metals, the ionic hydrides are frequently pertained to as saline or salt-like hydrides.
• Hydride is explained to be the anion of hydrogen. It is a chemical mixture where the hydrogen atoms display nucleophilic, basic or reducing properties.

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