Flashcards in 2.2.1 Electron Structure Deck (15)
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1
Number of electrons that can fill first 4 electron shells
1 -> 2
2 -> 8
3 -> 18
4 -> 32
2
Orbital
a region of space around the nucleus that can hold up to 2 electrons with opposite spins
3
Shape of S orbital
spherical
4
Shape of P orbital
dumbbell
5
number of orbitals in s,p,d sub-shells
s -> 1
p -> 3
d -> 5
6
number of electrons in s,p,d sub-shells
s -> 2
p -> 6
d -> 10
7
Writing electron configuration (order)
1s2s2p3s3p4s3d4p4d
8
Degenerate
Orbitals with the same energy
9
Electrons in a box
one box is an orbital containing 2 electrons with opposite spins
fill up one electron in a box at a time
10
Why does 4s come before 3d?
4s is at a lower energy and electrons will enter a lower energy level first
11
Why do the electrons fill up one one box at a time in an energy level?
due to repulsion, they have the same charge and so want to stay as far away from each other as possible
12
Electron spins
electrons have spins, 2 electrons can't have the same spin in an orbital
13
Writing ion configuration
cations- remove electrons from highest energy levels first
lose 4s electrons before 3d electrons
anions- just add on electrons
14
Noble gases and configuration
use nearest past noble gas to write configuration (makes it shorter)
15
