The maximum no. or electrons in phosphorous atom for which n + I + m = 3 will be :

  1. A

    6

  2. B

    5

  3. C

    4

  4. D

    3

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    Solution:

    The electronic configuration is,

    P1s1s22s22p63s23p3

    Here, the total number of electron with n+m+l=3 can be given as

    2 (for p with ±12 spin), +2 (for 39 with ±12spin)
    +1 (for 3p as it has only single electron)
    5 electrons.

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