week5 prompt 2

A Atomic mass number is the number of electrons. The mass number is the the number of protons. For example you can make a circle of the alomic mass number and the mass number. You can put the atomic number in the middle of the circle. Then make 2 more circle around the smaller circle and put how many the mass number is on the lines. You put some mass number on the first line and the other mass numbers on the second line. That is the diefference between the atomic mass number and the mass number.