Question

Q: The uncertainty for the calculation of radius of the 1st Bohr orbit is 2% for the hydrogen
atom. What will be the uncertainty in velocity of electron in the 1st Bohr orbit.
0-10​

Answer 1

Answer:

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Velocity of electron in first Bohr orbit of H- atom

mvr=2πnh, r=a0=0.529Ao

n=1,h=6.626×10−26,m=9.1×10−31kg

∴v=2π×91×10−31×0.529×10−101×6.626×10−26

=2.18×106ms−1.