Charges Electrons orbiting the nucleus-plural nuceli
Protons +1 Bigger number is atomic mass- smaller is atomic number. Atomic
Neutrons 0 number=number of protons.
Electrons-1 Periods all have the same amount of shells
Atomic Mass Atomic Mass - Atomic Number = Number of neutrons.
Protons-1 Groups-electrons on outer shell- group 1 has 1 on outer shell etc
Electrons- 1/1836 Noble gasses full outer shells