Question

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?

• A. (A), (B) and (C)
• B. (A), (C), (D) and (E)
• C. (A), (C) and (D)
• D. (A), (B), (C) and (D)

Answer 1

Answer: (C)

(A), (C) and (D)

Answer 2

The correct answer is (C) : (A), (C) and (D)
Possible values of l for a given ‘n’ = 0,1,2 …(n – 1)
For l = 5, total orbitals = 2l + 1
= 2(5) + 1 = 11 orbital
Therefore A, C and D are correct statements