Question

1st attempt
part 1 (1 point)
give the name for the fourth (missing) oxoacid of chlorine.
part 2 (1 point)
give the formula for the fourth (missing) oxoacid of chlorine.

Explanation:

Step1: Recall oxoacids of chlorine

The oxoacids of chlorine are hypochlorous acid ($HClO$), chlorous acid ($HClO_2$), chloric acid ($HClO_3$), and perchloric acid ($HClO_4$).

Step2: Identify the fourth one

The fourth oxo - acid is perchloric acid with formula $HClO_4$.

Answer:

Part 1: Perchloric acid
Part 2: $HClO_4$