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Atomic shell
Wave-mechanical atomic model
radius of nth orbit
r
n
=
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
ordinal number of electron orbit (moving from nucleus)
n =
Planck's constant
h =
6.626E-34
J·s
electron mass
m
e
=
9.109E-31
kg
velocity of electron at nth stationary orbit
v
n
=
m/s
x
m/s
km/h
cm/s
ft/s
kn
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"
