Question

what is the order of covalent character of hydrides in periodic table?

Answer 1

Answer:

Covalent hydrides are primarily compounds of hydrogen and nonmetals, in which the bonds are evidently electron pairs shared by atoms of comparable electronegativities. For example, most nonmetal hydrides are volatile compounds, held together in the condensed state by relatively weak van der Waals intermolecular interactions (see chemical bonding). Covalent hydrides are liquids or gases that have low melting and boiling points, except in those cases (such as water) where their properties are modified by hydrogen bonding. For example, although volatile, NH3, H2O, and HF are held together in the liquid state primarily by hydrogen bonding.

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