Write the appropriate Lewis structures for these free radicals ･CH₃ and ･CH(CH₃)₂.

Lewis structure of the methyl radical CH3 with a free electron.

Lewis structure of the isopropyl radical CH(CH3)2 with a free electron.

Lewis structure of the cationic radical with a positive charge on carbon and a free electron.

Lewis structure of the secondary radical with a free electron on carbon.

Write the appropriate Lewis structures for these free radicals ･CH3 and ･CH(CH3)2.