Atomic Structure

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