JEE Main & Advanced JEE Main Paper (Held on 10-4-2019 Morning)

  • question_answer The graph between \[|\psi {{|}^{2}}\]and r(radial distance) is shown below. This represents :- [JEE Main 10-4-2019 Morning]

    A) 3s orbital                     

    B) 1s orbital

    C) 2p orbital                    

    D) 2s orbital

    Correct Answer: D

    Solution :

     Graph of \[|\psi {{|}^{2}}\]v/s r, touches r axis at 1 point so it has one radial node and since at r = 0, it has some value so it should be for 's' orbital. \[\therefore n-\ell -1=1\]where \[\ell =0\Rightarrow n-1=1\] \[\therefore n=2\Rightarrow '2s'\] orbital


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