In Bohr's model, `r_(n,z)=` radius of `n^(th)` orbit with atomic number Z
`u_(n,z) =P.E` of electron in `n^(th)` orbit with atomic number Z
`K_(n,z) = K.E` of electron in `n^(th)` orbit with atomic number Z
`V_(n,z) =` velocity of electron in `n^(th)` orbit with atomic number Z
`T_(n,z)=` time period of revolution in `n^(th)` orbit with atomic number Z
`{:(Column I,Column II),((A)U_(1.2),K_(1.1),(p)1:8),((B)r_(2.1),r_(1.2),(q)-8:1),((C)V_(1.3),V_(3.1),(r)9:1),((D)T_(1.2),T_(2.2),(s)8:1):}`

Answer

A-q, B-s, C-r, D-p

Explanation

`r_(n,z) prop (n^(2))/(z)`
`rarr U_(n,z) prop -(z^(2))/(n^(2)), " "rarr KE_(n,z) prop (z^(2))/(n^(2))`
`rarr T_(n,z) prop -(z^(2))/(n^(2)), " "rarr V_(n,z) prop (z)/(n)`