Question

nomenclature of covalent compounds
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which rule should be followed when naming binary acids?
○ use a prefix for the number of hydrogens.
○ start the name with hydro-.
○ change -ate to -ic.
○ change -ous to -ite.

Explanation:

Binary acids are named by first using the prefix "hydro-" to indicate the presence of hydrogen, followed by the root of the nonmetal element name, and ending with the suffix "-ic" plus the word "acid". The other options apply to naming covalent compounds or oxyacids, not binary acids.

Answer:

Start the name with hydro-.