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Periodic Table 2

PT Trends and E. Configurations

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
Created by: cadetjt