Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 12. atoms4 Marks
MCQ
Who discovered spin quantum number
✓
Unlenbeck and Goudsmit
B
Nell’s Bohr
C
Zeeman
D
Sommerfield
✓
Answer
Correct option: A.
Unlenbeck and Goudsmit
a George Unlenbeck and Samuel Goudsmit were studying certain details of spectral lines known as the anamalous Zeeman effect. This eventually led them to the realization that Pouli's fourth quantum number must relate to electron spin.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.