Question #a7f46

1 Answer
Feb 18, 2018

similar and dissimilar.

Explanation:

Similar in that they contain the same sub-atomic particles in protons, neutrons and electrons, but dissimilar in that they contain different numbers of these sub-atomic particles. These can be deduced from the periodic table. The atomic number gives the number of protons, which equals the number of electrons. The number of neutrons can be calculated by subtracting the atomic number from the mass number.