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AQA CHEMISTRY SUMMARY- electron configuration

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chem summary notes on electron configuration includes: particle wave duality, main energy levels, priniciples etc









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Uploaded on
November 9, 2025
Number of pages
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Written in
2023/2024
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Summary

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ELECTRON CONFIGURATION PARTICLE WAVE DUAUTY
好虛 , de Broglie
i3
queentousm mecharricss Governead By

x
probabivity
I ☆
'

t
wedon krmoow
G elreexac t
* *
3 pace of the atomsececton




h
XX
*


¤

e
i
2. 1
Ar
2.8
,
8 股XX
energy levelchartofNa




o
XX
Λ
Gthemumber of
electronsoon the outermostt strell = groous 7o.




z
s
grovep 8 groupo 个 electon

of dectvon swells
s the mumber period no
↑↓
-




h
3s
.




energy
另外 个 electon
level
↑↓ ↑↓↑↓↑↓ 畫 左指上去




e
2s 2B
MAIN ENERGY LEVELS nigner
Orbitass energy
听固哟 ↑ 先


@
-




wevel




o
s
of regions spaceelectrons ”
I
σ

are most ciihely to be in corweer
3 sus division of sub emergy




z
a

level
Lerel arzsczposc
l3 maximurm of 2 electons = ^

Li IS 2s




h
'-
" tne 2 electromsineacir
' 2

pb 6
2
orbital spin in opposite Ar Is 2S 2 3s 3p
directrons




e
Isa 25 po 3sa sps energy ievel Et
=
A1 2
corestenergy level 3d




o

~
K ISE 252 2p 6 39 3p 04
mainlewel I 2 号 4




z
2p 63523
^

Mn 15223 pb 4S 23d
5

sutbvevel ssip s . pd s.
p ,
df
.




h
Crand arx have expected evection
" 5 '
'0 strnectcere
4s 3d 4 s 3d




e
sub level § β d f 7dve to even distribution of electons

orbitals I




o
3 5 r


electrons 2 868 话 10 ⑳ 4 7 SHORT STRUCTURE




z
“ ↑
*




个↓ 兩个 ↓ 最多每个 过左去最近嘅 noblegas
sublevel可以有 要已經过咗既先像
IS → 2S → 2
P → 35 → 3P → 4S →
3d → 4p → 4d [ He 了 [ Ne] [ ArJ

PRINCIPLES
- bvuilding
IONS
esectrons are lost
nighest energy
-




wwest energy first
forrrved
-




uner an on
exdusion principle
-




4s electrons are cost before 3 d
-




opposite spin in orbital
-




conce 4s and 3d are occerpred ,
4s
fTllorssitalswIsarre energy M on
-




w [ll than 3 d]
electon before paiving them
be nigner

π



山一

豆田


一子二
口 一
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