Chlorine element has +7 oxidation state in.......and + 1 in.......

Explanation

To determine the oxidation states of chlorine in different compounds, we can follow these steps:

### Step 1: Identify the compounds where chlorine exhibits +7 oxidation state.
Chlorine can have a +7 oxidation state in compounds where it is bonded to more electronegative elements, such as oxygen. One of the well-known compounds where chlorine has a +7 oxidation state is **chloric acid (HClO₄)**.

### Step 2: Calculate the oxidation state of chlorine in chloric acid (HClO₄).
To find the oxidation state of chlorine in HClO₄, we can use the following formula:
\[ \text{Sum of oxidation states} = 0 \]
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