alleryBohr's second postulate quantises which quantity?
ANuclear mass
BOrbital colour
CAngular momentum
DElectric charge
Answer & Solution
Correct answer: C. Angular momentum
1. Only certain orbits are permitted to the electron.
2. The rule picking them out involves h over two pi.
3. It quantises the angular momentum.
_Source: syllabus Physics Part II, Chapter 12, Atoms._
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