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Consider the ground state configuration of Cr atom (Z = 24). The total numbers of electrons with azimuthal quantum numbers l = 1 and l = 2, respectively, are
  • a)
    12 and 4
  • b)
    12 and 5
  • c)
    16 and 4
  • d)
    16 and 5
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider the ground state configuration of Cr atom (Z = 24). The total...
E.C. of Cr (Z = 24) is
Thus, number of electrons with l = 1 is 12
and number of electrons with l = 2 is 5
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Consider the ground state configuration of Cr atom (Z = 24). The total...


Explanation:

Ground state configuration of Cr atom (Z = 24):
- The ground state electron configuration of chromium (Z = 24) is [Ar] 3d^5 4s^1.

Number of electrons with azimuthal quantum number l = 1:
- In the ground state configuration of chromium, the 4s orbital contains 1 electron with l = 0.
- The azimuthal quantum number l = 1 corresponds to the p orbitals.
- The 3d orbitals have l = 2, not l = 1.
- Therefore, the total number of electrons with l = 1 is 1.

Number of electrons with azimuthal quantum number l = 2:
- In the ground state configuration of chromium, the 3d orbitals contain 5 electrons with l = 2.
- The azimuthal quantum number l = 2 corresponds to the d orbitals.
- Therefore, the total number of electrons with l = 2 is 5.

Therefore, the correct answer is option B) 12 and 5, as there are 12 electrons with l = 1 and 4 electrons with l = 2 in the ground state configuration of chromium.
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Consider the ground state configuration of Cr atom (Z = 24). The total numbers of electrons with azimuthal quantum numbers l = 1 and l = 2, respectively, area)12 and 4b)12 and 5c)16 and 4d)16 and 5Correct answer is option 'B'. Can you explain this answer?
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