Each electron in an atom must have its own unique set of quantum number is a statement of
Correct answer: B. Pauli exclusion principle
- A. Aufbau principle
- B. Pauli exclusion principle
- C. Hund's rule
- D. None of these
Explanation
Pauli's exclusion principle states that no two electrons in the same atom can have identical values for all four of their quantum numbers. Aufbau principle dictates the manner in which atomic orbitals are filled in an atom in its ground state i.e., in order of increasing energy/ low energy orbitals are filled first. Hund's rule states that every orbital in a subshell is filled singly first by one electron each (with the same spin) before any one orbital is doubly occupied.
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About Atomic Structure
Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.
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