Answer:
James Chadwick
Explanation:
James Chadwick discovered that the nucleus of each atom contains neutrons in 1932. Shortly after this, Eugene Wigner suggested that the electromagnetic force is not involved in holding the nucleus together and that there are two different nuclear forces. We now refer to these as the strong and weak nuclear forces.
Answer:
I would like aliens if they exist
Explanation:
Reactivity is the tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy.
A quantity having direction as well as magnitude,especially as determining the position of one point in space relative to another.
B. The number of field lines on the source charge.
