Answer: Communication within neurons is primarily electrochemical and communication between neurons is Chemical.
Explanation: For electrochemical communication, neurons usew electrical signals called action potentials to transmit information within cells. These signals are generated by the movement of ions across the cell mebrane and are propageted along the axon to the synapse.
For chemical communication, when an action potential reaches the end of an axon it triggers the release of neurotransmitters into synaptic cleft.