2. Sample Papers
  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-32

  • question_answer
    How many elements would be in the IInd  period of the Period Table if the spin quantum numbers could have the value \[+\frac{1}{2},0,-\frac{1}{2}?\]

    A) 18       

    B)                                    12

    C) 10  

    D)                                    8

    Correct Answer: B

    Solution :

    For IInd period                 n = 2 hence                 I                               m            s                 0                              0              \[+\frac{1}{2}\,,\,0,\,-\frac{1}{2}\]                 1                              -1            \[+\frac{1}{2}\,,\,0,\,-\frac{1}{2}\]                                                 0              \[+\frac{1}{2}\,,\,0,\,-\frac{1}{2}\]                                                 +1           \[+\frac{1}{2}\,,\,0,\,-\frac{1}{2}\]                 Hence, total number of elements (total value of spin quantum number) = 12


You need to login to perform this action.
You will be redirected in 3 sec spinner