Question

learning: molecular compounds - acids (binary & oxyacids)
question
what is the formula for perchloric acid?
answer
hclo₂
hclo₃
hclo₅
hclo₄
i dont know yet

Explanation:

Perchloric acid is an oxy - acid. The prefix "per -" indicates the highest oxidation state of the central chlorine atom in the series of chlorine - containing oxy - acids. In perchloric acid, chlorine has an oxidation state of +7 and the formula is $HClO_4$.

Answer:

D. $HClO_4$