A student who is studying atomic reactions creates the following Venn diagram.
Reaction A
- Involves electrons
-Happens outside atomic
nucleus
- Releases relatively small
amounts of energy.
Reaction b - Involves neutrons
- Happens inside atomic
nucleus
- Releases relatively large
amounts of energy

Reaction A is chemical, Reaction B ia nuclear.

Explanation:

Chemical reaction involves the transfer of electrons between atoms. Electrons exists on the orbital shell of the atom, outside the nucleus and the reaction yield moderate to small energy.

Nuclear reaction involves the changing of the nucleus of the atom itself. It releases a large spantenous amount of energy.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

i think its 100

i hope this !