For every action there is an equal and opposite reaction. what does this quote mean?

so it is said that every action has equal and opposite reaction

Explanation:

This is newton's III law which states that if some force is applied in the form of action force to an object then the same magnitude force is applied by the object on the source in reverse direction

so we can say that the reaction force is always applied by object in opposite direction

so in vector form we can say

so it is said that every action has equal and opposite reaction

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge