Now, this guy will be very active because it will tend to act as a lewis base donating that pair of electrons. Likewise, this guy will also be very active. It will tend to accept a pair of electrons into its empty orbital, which we'll see in just a second. So let's look at the second type of reaction. Now, this methane molecule, the ch bond, also dissociates, but now it associates in a way such that the pair of electrons go onto the carbon atoms. So now we get a methyl anion and a positively charged H atom.