Designate the type of each set of `H ` atomes in `6-` methyl `-` hept `-2-`ene and list them in the decreasing order of reactivity towards radical substitution.

Explanation

To solve the problem of designating the type of each set of hydrogen atoms in 6-methyl-hept-2-ene and listing them in order of reactivity towards radical substitution, we will follow these steps:

### Step 1: Draw the Structure of 6-Methyl-Hept-2-ene
First, we need to draw the structure of 6-methyl-hept-2-ene. The molecular formula can be deduced from the name:
- "Hept" indicates a 7-carbon chain.
- "2-ene" indicates a double bond between the second and third carbons.
- "6-methyl" indicates a methyl group (CH₃) attached to the sixth carbon.

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