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JEE Main 202228 JuneEvening Shift
Exam
JEE Main
Year
2022
Date
28 June
Shift
Evening Shift
Subject
Chemistry
Chapter
Structure of Atom

JEE Main 2022 · 28 June · Evening Shift · Chemistry · Structure of Atom

Consider the following statements : (A) The principal quantum...

Consider the following statements :

(A) The principal quantum number 'nn' is a positive integer with values of 'nn' =1,2,3,…= 1, 2, 3, \ldots

(B) The azimuthal quantum number 'll' for a given 'nn' (principal quantum number) can have values as 'll' =0,1,2,….n= 0, 1, 2, \ldots . n has (2n+1)\left(2n + 1\right) values.

(C) Magnetic orbital quantum number 'm\mathrm{m}' for a particular 'l\mathrm{l}' (azimuthal quantum number) has (2l+1)(2\mathrm{l}+1) values.

(D) ±12\pm \dfrac{1}{2} are the two possible orientations of electron spin.

(E) For l=5l = 5, there will be a total of 99 orbital

Which of the above statements are correct?

Options

  1. A(A),(B) and (C)\left(A\right), \left(B\right) \text{ and } \left(C\right)
  2. B(A),(C),(D) and (E)\left(A\right), \left(C\right), \left(D\right) \text{ and } \left(E\right)
  3. C(A),(C) and (D)\left(A\right), \left(C\right) \text{ and } \left(D\right)
  4. D(A),(B),(C) and (D)\left(A\right), \left(B\right), \left(C\right) \text{ and } \left(D\right)

Correct answer

C. (A),(C) and (D)\left(A\right), \left(C\right) \text{ and } \left(D\right)

Step-by-step solution

A) Number of values of -n=1,2,3....∞\infty

B) Number of values of l=0to(n−1)l = 0to ( n - 1 )

C) Number of values of m=−lto+l- lto + l

Total values=2l+12l + 1

D)The two possible orientations of electronic spin, which are spin quantum numbers are +12and−12+ \dfrac{1}{2}and - \dfrac{1}{2}

E) For l=5l = 5 total number of orbital is \left(2l + 1\right) = \left(2x5 + 1\right) = 11

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