Assertion : When a neuron is not conducting any impulse, i.e. resting, the axoplasm inside the axon contains high concentration of `K^(+)` and negatively charged proteins and low concentration of `Na^(+)`.
Reason : In resting, the axonal membrane is comparatively more permeable to `K^(+)` ions and nearly impermeable to `Na^(+)` ions. Similarly, the membrane is impermeable to negatively charged proteins present in axoplasm