What is the oxidation state of chlorine in perchlorate ion?

The oxidation state of chlorine in the perchlorate ion (ClO4-) can be determined using the rules for oxidation numbers.

Step 1: Identify the known oxidation states. Oxygen typically has an oxidation state of -2.

Step 2: Set up an equation to solve for the unknown oxidation state. In the perchlorate ion, there is one chlorine atom and four oxygen atoms. Let x be the oxidation state of chlorine. The sum of the oxidation states in a neutral compound is zero, and in an ion, it's equal to the charge of the ion.

So, the equation is: x + 4(-2) = -1

Step 3: Solve for x.

x - 8 = -1 x = -1 + 8 x = 7

Therefore, the oxidation state of chlorine in the perchlorate ion is +7.