Periodicity
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17 terms
Chemistry | English |
|---|---|
 Atomic Radii | half the distance between 2 nuclei of a molecule consisting of identical atoms |
| Ionization Energy | energy required to remove an electron from a gaseous atom to form an ion |
| Electron Affinity | energy change associated with the addition of an electron(s) to a gaseous atom |
| Electronegativity | relative attraction an atom has for the electrons in a shared pair of electrons (electrons in a bond) |
| Atomic Radii Trend | Decrease L to R; Increase going down |
| Ionization Trend | Increase L to R; Decrease going down |
| Electron Affinity Trend | Increase L to R; Decrease going down |
| Electronegativity trend | Increase L to R; Decrease going down |
| Alkali Metals | Group 1A, react violently w/ cold water to form metal hydroxide & hydrogen gas; SOFT |
| Alkaline Earth Metals | Group 2A, not as reactive as 1A, harder |
| Halogens | Group 7A, non-metals |
| Noble Gases | Inert or rare gases, Group 0 or 8 |
| Transition metals | 1B-8B, typical metals, d orbitals |
| Inner Transition Metals | Lanthanide series, Actinide Series, fill f orbitals |
| Periods | Horizontal, 7 periods, properties vary from group to group |
| Groups | aka families, vertical, ID by numeral and letter |
| Representative elements | Groups 1A-8A |
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