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Q. Consider the following statements :
(A) The principal quantum number ' n ' is a positive integer with values of ' n ' =1,2,3,.
(B) The azimuthal quantum number ' l ' for a given ' n ' (principal quantum number) can have values as l=0,1,2,n
(C) Magnetic orbital quantum number ' ml ' for a particular ' l ' (azimuthal quantum number) has ( 2l +1) values.
(D) ±1/2 are the two possible orientations of electron spin.
(E) For l=5, there will be a total of 9 orbital.
Which of the above statements are correct?

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Solution:

(A) Number of values of n=1,2,3
(B) Number of values of =0 to (n1)
(C.) Number of values of m= to +
Total values =2+1
(D) Values of spin=±12
(E) For =5 number of orbitals =2+1=11