Answer
Matching the subatomic particles (1 to 3) to each of the descriptions below:
1. protons 2. neutrons 3. electrons
Work Step by Step
a. mass number= number of protons + number of neutrons
b. electrons surround the nucleus/ are scattered around the nucleus
c. protons and neutrons are present in the nucleus.
d. the charge of neutrons is 0
e. the number of electrons and protons are equal in an atom.
