One student wants to know if atom number 2 below is the same

Last updated: 7/25/2022

One student wants to know if atom number 2 below is the same as atoms 1 and 3 below. atom #of electrons #of protons #of neutrons mass# 1 10 12 ? 24 2 12 ? 13 25 3 12 12 14 ? Which argument correctly supports that claim? Atom 2 is the same, because it has the same number of protons as atoms 1 and 3. Atom 2 is not the same, because it has a different number of neutrons than atoms 1 and 3. Atom 2 is not the same, because the mass number is different from atoms 1 and 3. Atom 2 is the same, because it has just as many electrons as the number of protons in atoms 1 and 3.