What is the calculated formal oxidation state of chlorine in perchloric acid ()? — p Block Elements Chemistry Question

💡 Solution & Explanation

In $HClO_4$, let the oxidation state of Cl be $x$. Hydrogen is +1, and Oxygen is -2. Thus, $1 + x + 4(-2) = 0 \implies x - 7 = 0 \implies x = +7$.