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Find a formula
Atomic shell
Hydrogen atom
velocity of electron at nth stationary orbit
v
n
=
m/s
x
m/s
km/h
cm/s
ft/s
kn
elementary electric charge
e =
1.602E-19
C
ordinal number of electron orbit (moving from nucleus)
n =
electric constant
ε
0
=
8.854E-12
F/m
Planck's constant
h =
6.626E-34
J·s
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"