| A | B |
|---|
| effective nuclear charge | the net positive charge experienced by an electron in an atom |
| atomic radius | half the distance between the nuclei of two identical atoms bonded together |
| ionic radius | half the width of an ion |
| isoelectronic series | a series of atoms, ions, or molecules that have the same number of electrons |
| ionization energy | the energy required to remove an electron from a gaseous atom in it's ground state |
| electron affinity | the energy change that occurs when an electron is added to a gaseous atom or ion |
| metallic character | the extent to which an element acts like a metal (conducts electricity, is malleable, etc) |
| metalloid | elements with properties between metals and nonmetals |
