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Electron Configs

Review of electron configurations

display of ALL the electrons the atom of an element has electron configuration
display of only the valence electrons the atom of an element has Lewis Dot structure
outermost electrons with the highest energy valence
inner electrons with lower energy core
principle energy levels (7 of them) period
subatomic particle responsible for the atom's chemical properties electrons
change in the number of electrons ion
states that 8 is the stable number of valence electrons octet rule
stated that electrons are placed in the lowest energy level first Aufbau
stated that 2 is the max # of electrons in orbital ; must have OPPOSITE spins Pauli
stated that when only 1 electron in orbitals they must have the SAME spin Hund
max # of electrons in f block 14 (15)
max # of electrons in s block 2
max # of electrons in d block 10
max # of electrons in the p block 6
# of orbitals in the s block 1
# of orbitals in the d block 5
# of orbitals in the f block 7
# of orbitals in the p block 3
rule you must remember about location of d block elements period minus 1
first 2 elements where the electron configurations rules do not work Cr and Cu
element that is the exception in group 8A Helium [He]
elements in the same group have this in common similar chemical properties
this number tells you the # of valence electrons group number
this numbers tells you the # of ALL electrons atomic number
Created by: cadetjt


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