Question

12. An atom with an atomic number of 34, and a mass number of 79 has:

protons
neutrons
electrons
b. 45 Protons, 45 Neutrons, 34 Electrons
a. 34 Protons, 45 Neutrons, 34 Electrons
c. 45 Protons, 34 Neutrons, 34 Electrons

Answer 1

Answer is A.

Step-by-step explanation:

atomic number is number of protons.

atomic mass is protons + neutrons

and electrons = number of protons