Atomic structure and the Periodic Table

What the syllabus asks of you

• Describe the structure of the atom as a central nucleus containing neutrons and protons surrounded by electrons in shells
• State the relative charges and relative masses of a proton, a neutron and an electron
• Define proton number / atomic number as the number of protons in the nucleus of an atom
• Define mass number / nucleon number as the total number of protons and neutrons in the nucleus of an atom
• Determine the electronic configuration of elements and their ions with proton number 1 to 20, e.g. 2,8,3
• State that: (a) Group VIII noble gases have a full outer electron shell (b) the number of outer shell electrons is equal to the group number in Groups I to VII (c) the number of occupied electron shells is equal to the period number