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Periodic Table 2
PT Trends and E. Configurations
| Question | Answer |
|---|---|
| Ability to attract electrons from atoms of another element | Electronegativity |
| The distance between the nuclei of 2 atoms the the same element | Atomic Size |
| The energy needed to remove electrons from atoms of an element | Ionization |
| Ions that have a positive charge & lose valence electrons | Cation |
| Ions that have a negative charge & gain valence electrons | Anions |
| The most electronegative element and has the highest ionization energy | F |
| The element with the largest atomic size | Fr |
| Says that electrons are placed in the lowest energy level first (s) | Aufbau's Principle |
| Says that electrons must have same spin until each orbital has 1 electron | Hund's Rule |
| Element that is the exception in Group 8A | Helium [He] |
| Trend for finding most electronegative element | Up and to the right |
| Trend for finding element with largest atomic size | Down and to the left |
| Only group that has a full s orbital and p orbital | 8A (Noble Gases) |
| block you must remember "Period minus 1" | d block |
| block that can only hold a max # of 2 valence electrons | s block |
| block that has a max # of 14 valence electrons | f block |
| block that has max # of of 6 valence electrons | p block |
| element that the 3 electron configuration rules work up to (and include) | V |
| element with the electron config. ending of 4s1 3d5 | Cr |
| element with the electron config. ending of 4s1 3d10 | Cu |
| principle energy levels are this | periods |
| number of valence electrons match this number | group number |
| electrons closest to the nucleus ; have lowest energy ; not in chemical bonding | core |
| outermost electrons ; highest energy ; used in chemical bonding | valence |
| trend for atomic numbers from left to right on P.T. | increases |