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.
Last updated
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.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
168 O-2 has how many electrons in s-orbitals?
3s2, 3p4 valence shell electronic configuration corresponds to ?
6Y = 2s12P1x2P1y2P1z this is_configuration
A 1-kW radio frequency of 880 KHz. How many quantas per second does it emit?
A 1kW radio transmitter operates at a frequency of 880 kHz. How many quanta per second does it emit?