Imagine a world in which the Pauli Exclusion principle is “No more than one electron can occupy an atomic orbital, irrespective of its spin.” How many elements would there be in the second row of the periodic table, assuming that nothing else is different about this world?

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter5: Quantum Mechanics And Atomic Structure
Section: Chapter Questions
Problem 25P: Suppose that the spin quantum number did not exist, and therefore only one electron could occupy...
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Imagine a world in which the Pauli Exclusion principle is “No more than one electron can occupy an atomic orbital, irrespective of its spin.” How many elements would there be in the second row of the periodic table, assuming that nothing else is different about this world?
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The question is based on the concept of atomic structure.

it involves modified paulu's exclusion principle. so we have to consider a situation in which another pauli's principle exist.

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