Quantum Numbers - Quantum
Numbers 
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Unformatted text preview: Quantum
Numbers 
 1st
Quantum
number
n
=
1,
2,
3,
4,
 …
This
is
the
“shell”
and
comes
 3s from
the
bohr
model
 2nd
Quantum
number,
angular
 momentum,

l
=
(n‐1),
…0
This
is
 the
“sub‐shell”
or
set
of
orbitals:
 2s s
orbitals
have
l
=
0,
p
orbitals
 have
l
=
1,
d
orbitals
have
l
=
2
…
 3rd
Quantum
number,
magneEc,

 Ml=l..0..‐l There
are
2l +
1
 1s “orbitals”
in
each
sub‐shell

 4th
Quantum,
number,
spin
,

 Ms=
½
or
‐½
 3,0,0,½
 2,1,‐1,‐½
 2,1,1,‐½
 2,1,0,‐½
 2,0,0,½
 1,0,0,½
 2,1,‐1,½
 2,1,1,½
 2,1,0,½
 2p 2,0,0,‐½
 1,0,0,‐½
 ...
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