week 1, concept 5: Electron configuration (matter and atoms) Flashcards
concept 5 :
electron configuration
Electron configuration:
The arrangement of electrons in the extranuclear space.
The energy of electrons in an atom is quantized, which means that an electron in an atom can have only certain allowed energies.
Ground-state electron configuration:
The electron configuration of the lowest energy state of an atom.
distribution of electrons in shells
(visual)
distribution of orbitals within shells
(visual)
Shells fill in the order of increasing _ from _ to _.
Shells fill in the order of increasing energy from lowest to highest.
Valence shell:
The outermost incomplete shell.
Valence electron:
An electron in the valence shell.
Lewis dot structure:
The symbol of the element represents the nucleus and filled shells.
(visual)
Noble gas notation and lewis dot structure for alkali metals (group 1A elements)
(visual)
electron configuration and the periodic table
shells have _number of maxium _ (can have less but not more)
shells have fixed number of maxium electrons (can have less but not more)
orbitals are shown divided into _
boxes
can have this many electrons
s = _, p = _, d=_, f=_
s=2 , p=6, d=10, f=4
orbital:
patterns of electron density
everything to do with an atom has to do with the _ shell
last
the last shell is the _ shell
valance
valance shells, are the shell that take part in _
bonding
