Which of the following shows both the correct formula and correct name of an acid? a. hcio2, caloric acid b. hno2, hydronitrous acid c. h3po4, phosphoric acid. d. hi, iodic acid.

Answer is: C. H3PO4, phosphoric acid.

A) HClO₂ is chlorous acid.

Chlorous acid is weak inorganic acid. In this acid, chlorine has oxidation number +3.

B) HNO₂ is nitrous acid.

Nitrous acid is a weak monobasic acid.  In this acid, nitrogen has oxidation number +3.

D) HI is hydroiodic acid.

Hydroiodic acid is a highly acidic aqueous solution of hydrogen iodide. In this acid, iodine has oxidation number -1.

Explanation:

1. hydrogen ions

2. H3OP4 phosphoric acid

3. H2SO3

4. like ionic compounds

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;