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QUANTUM NUMBERS MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Which of the following sub levels does not exist
  1.    2p
  2.    3d
  3.    2d
  4.    4f
 Discuss Question
Answer: Option C. -> 2d
Question 2. What is the maximum number of electrons that contain the values n=4 l=3
  1.    6
  2.    10
  3.    14
  4.    18
 Discuss Question
Answer: Option C. -> 14
Question 3. What quantum number describes the energy level of an orbital?
  1.    l
  2.    m
  3.    s
  4.    n
 Discuss Question
Answer: Option D. -> n
Question 4. How many total electrons can the f orbitals in a sublevel hold?
  1.    2
  2.    14
  3.    6
  4.    10
 Discuss Question
Answer: Option B. -> 14
Question 5. How many orbitals (including sub orbitals) are found in a shell with n = 2?
  1.    2
  2.    3
  3.    4
  4.    Both A & B
 Discuss Question
Answer: Option C. -> 4
Question 6. Which rule shows us that we have to add electrons singly to orbitals until each has one before we start pairing?
  1.    Hund's Rule
  2.    Pauli Exclusion
  3.    Aufbau Principle
  4.    Paschen Series
 Discuss Question
Answer: Option A. -> Hund's Rule
Question 7. How many 4d orbitals are there in an atom?
  1.    1
  2.    3
  3.    5
  4.    none of the above
 Discuss Question
Answer: Option C. -> 5
Question 8. Which set of Quantum numbers is not allowed
  1.    (3,1,1,-1/2)
  2.    (2,1,-2,+1/2)
  3.    (4,2,-1,-1/2)
  4.    none of the above
 Discuss Question
Answer: Option B. -> (2,1,-2,+1/2)
Question 9. Which orbitals cannot exist
  1.    3p
  2.    4d
  3.    3f
  4.    6s
 Discuss Question
Answer: Option C. -> 3f
Question 10. The maximum number of electrons with quantum numbers with n=3 and l=2 is
  1.    2
  2.    4
  3.    6
  4.    10
 Discuss Question
Answer: Option D. -> 10

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