OCR CHEMISTRY AS NOTES (BONDING AND ELECTRON STRUCTURE)

ELECTRON CONFIGURATION
The higher the shell number
,
the


shells are further away from the nucleus
Electron split into 4 sub shells .



and the higher the energy level
SHELL NO SUBSHELLS NO OF ELECTRONS
.


- .




S subs hell → l orbital → z electrons
IS 2 Shell number is also
P subs hell → 3 orbitals → 6 electrons
known as
principal
2 25 , Zp 8
numbers
D subshell → 5 orbitals → to electrons quantum
3 35 , 3p ,
3d 18
F subs hell → 7 orbitals → 14 electrons




An
Electron

152,25




ORBITAL
atomic
configuration
Zp
'

,
35




orbital is
,
3.
pb ,
when

45




SHAPE
a
, 3d
2=36
"




region around
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the

nucleus

with
that can

opposite spins
hold

.
up to two electrons s


anywhere
orbital is
spherical
within the
and the


sphere
25 can move
⑧Bffggg
S orbital
°
90
P orbitals ( Px , Py , Pz ) are to each other .




↳ these orbitals make up the p sub shell


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to
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dumbbell each
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The orbitals are in the shape of a
p× orbital
Orbital•
hold up to Pz
-




of
which 2e which can move
anywhere
within the shape .
By orbital