Chemistry Periodic Trends
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15 terms
Terms | Definitions |
|---|---|
 Valence electrons | increases: - → (same) and right |
| Atomic Radii | increases: ↓ ← down and left |
| Electronegativity | increases: ↑ → up and right |
| Nobel Gases with Electronegativity | equals zero, not electronegative |
| Ionic Radii metals | increases: ↓ ← down and left Cations smaller than anions |
| Ionic Radii nonmetals | increases: ↓ → down and right Cations smaller than anions |
| Ionization Energy | increases: ↑ → up and right |
| Electron Affinity | increases: ↑ → up and right |
| Nobel Gases with Electron Affinity | Has a very small electron affinity |
| Valence electrons definition | Electrons located in the highest energy level that are available to be lost, gained or shared. |
| Atomic radii | As atomic number increases across a period, the nucleus has a stronger attracts for the electrons As you move down a group, the electrons fill the higher energy levels |
| Electronegativity definition | The ability of an atom in a molecule to attract shared electrons to itself and to attract electrons in a bond |
| Ionization energy definition | Amount of energy required to remove the highest energy valence electron from a gaseous atom or ion |
| Electron affinity definition | Amount of energy released when an atom gains an electron |
| Shielding effect | The repulsion of the inner or core electrons of the valence electrons reducing the attraction that the nucleus has for the valence electrons |
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