WBJEE · Chemistry · Structure of Atom
The maximum number of electrons in an atom in which the last electron filled has the quantum numbers \(n=3, \ell=2\) and \(m=-1\) is
- A 17
- B 27
- C 28
- D 30
Answer & Solution
Correct Answer
(D) 30
Step-by-step Solution
Detailed explanation
Hint: \(\mathrm{n}=3\) and \(\mathrm{I}=2\) means \(3 \mathrm{~d}\) -orbital. Since five orientations of \(\mathrm{d}\) -orbitals are degenerate, \(\mathrm{m}=-1\) can be assigned to any one. For maximum number of electrons as asked, answer should be atomic number 30.
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