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NEET Sample Paper NEET Sample Test Paper-3

  • question_answer
    The orbital angular momentum of an electron in 3s orbital is

    A)  \[\frac{h}{2\pi }\]                  

    B)  zero

    C)  \[\frac{1}{2}.\frac{h}{2\pi }\]                    

    D)  \[\frac{1}{3}.\frac{h}{2\pi }\]

    Correct Answer: B

    Solution :

        Orbital angular momentum \[=\frac{h}{2\pi }\,\sqrt{l(l+1)}\] For 3s electron, \[l=0\] \[\therefore \]  Orbital angular monentum                                     \[=\frac{h}{2\pi }\sqrt{0(0+1)}\]                                                 \[=0\]


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