Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
In 1925, what did George Uhlenbeck and Samuel Goudsmit propose regarding electrons?
ChemistryStructure of AtomNEET
Options:
  • A They proposed the presence of the fourth quantum number known as the electron spin quantum number (ms).
  • B They proposed a new model of the atom.
  • C They proposed the existence of isotopes.
  • D They proposed a new element.
Solution:
2673 Upvotes Verified Answer
The correct answer is: They proposed the presence of the fourth quantum number known as the electron spin quantum number (ms).
In 1925, George Uhlenbeck and Samuel Goudsmit proposed the existence of the fourth quantum number known as the electron spin quantum number (ms) to describe the intrinsic spin angular momentum of electrons.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.