`barr,` average distance also described as expectation value of the distance of the electron from the nucleus is different from `r_(max).` For 1s orbital of H-atom, `r_(max)=a_(0), barr=3/2a_(0).` For 2s orbital of H-atom `r_(max) =0.77a_(0) "and" 5.23a_(0).` Find `barr"for"r_(max) = 5.23a_(0).` Also find `barr_(2)` for 1s orbital of `Li^(2+)` ion. Hence find the value of `((barr_(1)xxbarr_(2)))/(a_(0)^(2)).`

`barr,` average distance also described as expectation value of the di

1.	`barr,` average distance also described as expectation value of the distance of the electron from the nucleus is different from `r_(max).` For 1s orbital of H-atom, `r_(max)=a_(0), barr=3/2a_(0).` For 2s orbital of H-atom `r_(max) =0.77a_(0) "and" 5.23a_(0).` Find `barr"for"r_(max) = 5.23a_(0).` Also find `barr_(2)` for 1s orbital of `Li^(2+)` ion. Hence find the value of `((barr_(1)xxbarr_(2)))/(a_(0)^(2)).`
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