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Asked by timesnow r | 2nd May, 2011, 05:27: AM

Expert Answer:

According to Bohr,s quantization rule,in ground state,
 
where v is the required velocity, h is the planck's constant, m is the mass of the electron and r is the radius and 1 angstrom is equal to 
putting all this value we get
 
Now the magnitude and direction of electric field set up by protons at the location of electron will be
 
And the direction of electric field will be outwards.

Answered by  | 2nd May, 2011, 01:39: AM

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