Question

Select the incorrect statement about hydrides

• A. Ionic hydrides ,formed by most of the s-block elements are non -conducting in solid state.
• B. Molecular hydrides may act as Lewis acids
• C. Molecular hydrides may acts as Lewis bases
• D. Metallic hydrides are almost always non-stoichiometric and they so not conduct heat and electricity

Answer 1

The correct option is A Ionic hydrides ,formed by most of the s-block elements are non -conducting in solid state.

Ionic hydrides are formed between hydrogen and the most active metals. They are specially formed with alkali and alkaline earth metals of group one and two elements. Ionic hydrides of s-block elements are binary compounds soluble in water. Ionic hydrides combine vigorously with water to produce hydrogen gas. They conduct electricity in molten state. They are non conducting in solid state. Molecular hydrides can act as Lewis acid or base. Metallic hydrides are mostly non-stoichiometric they conduct heat and electricity. They conduct heat and electricity only in molten or aqueous state.