Consider the following statements. Which of the above statements are correct? (Enter the number of correct statements)

A. The principal quantum number is a positive integer with values of
B. The az

Question

Consider the following statements. Which of the above statements are correct? (Enter the number of correct statements)

A. The principal quantum number  is a positive integer with values of 
B. The azimuthal quantum number  for a given  can have values as , and has  values.
C. Magnetic quantum number  for a particular  can have  values.
D.  are two possible orientations of electron spin.
E. For , there will be a total of 9 orbitals.

Canvas Classes · Accepted Answer

Evaluating each statement:

A ✓ —  (positive integers). ✅

B ✗ —  ranges from  to  (NOT ), giving  values (not ). The statement says  which is wrong — it should be  to . ✗

C ✓ — For a given ,  ranges from  to , giving  values. ✅

D ✓ — Spin quantum number  (spin up) or  (spin down) — two orientations. ✅

E ✗ — For : number of orbitals , not 9. ( gives 9 orbitals.) ✗

Correct statements: A, C, D → Answer: 3

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