Quantum Numbers Worksheets
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QUANTUM NUMBERS - Review
There are 4 quantum numbers... n,l l l l ,m,s
n is the Principal Quantum Number
n = the energy level - ring outside the nucleus
n=1,2,3, Etc.
as “n” gets larger, the number of electrons found in that energy
level gets larger, as well
maximum number of electrons allowed in an energy level is
equal to 2n
2
l l l l = second quantum number tells which sublevel within the
energy level the electron is found
l l l l = 0 TO (n-1) therefore in the second energy level l l l l =0 and l l l l =1
l l l l =0 is s-sublevel
l l l l =2 is d-sublevel
l l l l =1 is p-sublevel
l l l l =3 is f-sublevel
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Types of
Types of
Orbitals
Orbitals
s –orbital =
spherical
shape
p-orbital =
s orbital
s orbital
dumb bell
shape
l l l l l l l l = 0
= 0
d-orbital = 2
p orbital
p orbital
dimensional
l l l l l l l l = 1
= 1
dumb bell
d orbital
d orbital
shape
l l l l l l l l = 2
= 2
3
Review last notes
ORBITALS - “m” quantum number
AREAS WITHIN SUBLEVELS WHERE
ELECTRONS ARE
- l to + l
each orbital holds 2 electrons
in the second energy level l l l l =0, “m”
can only equal zero (one orbital), but “l l l l ”
can also equal 1 and then “m” can
equal -1, 0 and +1 (3 orbitals)
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