"In an atom no two electrons can have the same set of four Quantum numbers" is stated by:
Correct answer: C. Pauli's Exclusion principle
- A. Heisenberg's uncertainty principle
- B. Aufbau Principle
- C. Pauli's Exclusion principle
- D. Hund's Rule
- E. (n+1) Rule
Explanation
The set of numbers used to describe the position and energy of the electron in an atom are called quantum numbers. There are four quantum numbers namely, principal, azimuthal, magnetic and spin quantum numbers. Pauli's exclusion principle states that in an atom no two electrons can have the same set of four quantum numbers. Let us take example of electrons in Helium, both have all quantum numbers same except spin quantum number, one is clockwise and other is anti-clockwise.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Atomic Structure questions
Which of the following shows the Planck's quantum theory?
Pressure in the gas discharge tube was kept to produce cathode rays
The number of degenerate orbitals in p-subshell is
Which pair has 1 electron in it's 's' orbital?
Which of the following orbital will be filled first than 4p?
The expression for the radius of nth orbit of hydrogen atom was derived by?