Chemistry, asked by aaruhi4, 1 year ago

calculate the energy associated with the 1st orbit of helium ?What is the radius of this element?

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Answered by rahul75438
147
answer is in the attachment
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Answered by Anonymous
85

Energy = - 13.6z×z/n× n electron volt= -54.4 electron volt (in this case z = 2 and n= 2).       radius of first orbit of he=0.265angstrom      and vanderwall radius of he element= 140 picometer

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