Question

masteryconnect wilson, makyla dtal - ch - term 1 - unit 2 assessment 25 - 26 given the table representing the subatomic particles in four different atoms: atom number of protons number of neutrons number of electrons a 4 4 4 e 5 7 5 g 6 7 6 j 12 12 12 which atom has a mass of 12 amu? g j e a

Explanation:

Step1: Recall mass - number formula

Mass number = Protons + Neutrons

Step2: Calculate mass of atom A

Mass of A = 4 + 4 = 8 amu

Step3: Calculate mass of atom E

Mass of E = 5+7 = 12 amu

Step4: Calculate mass of atom G

Mass of G = 6 + 7 = 13 amu

Step5: Calculate mass of atom J

Mass of J = 12+12 = 24 amu
So the atom with a mass of 12 amu is E.

Answer:

G