Answer:
Because the mass contributed by electrons is dwarfed by the nuclear contribution. There exists three orders of magnitude difference. Electronic mass can be ignored to a first approximation.
Explanation:
What?? i dont understand what your asking
Answer:
A nerve block is the injection of local anesthetic close to a targeted nerve or group of nerves to lessen pain.
Explanation:
Nerve blocks are typically used for pain in the back, legs, arms, buttocks, neck, and face