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NEET
Exam
NEET
Subject
Chemistry
Chapter
Structure of Atom

NEET · Chemistry · Structure of Atom

In 1925, what did George Uhlenbeck and Samuel Goudsmit propose...

In 1925, what did George Uhlenbeck and Samuel Goudsmit propose regarding electrons?

Options

  1. AThey proposed the presence of the fourth quantum number known as the electron spin quantum number (ms).
  2. BThey proposed a new model of the atom.
  3. CThey proposed the existence of isotopes.
  4. DThey proposed a new element.

Correct answer

A. They proposed the presence of the fourth quantum number known as the electron spin quantum number (ms).

Step-by-step solution

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.
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