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PhysicsModern PhysicsAtomic structureMedium2 minPYQ_2016
PhysicsMediummultiple choice

Highly excited states for hydrogen like atoms (also called Rydberg states) with nuclear charge Ze are defined by their principal quantum number n, where n >> 1. Which of the following statement(s) is (are) true?

Options:(select one or more)

Answer:
A, B, D
Solution:

As radiusr ∝n2z0
⇒  ∆rr=n+1z2-nz2nz2=2n+1n2≈2n∝1n
As energyE ∝z2n2
⇒  ∆EE=z2n2-z2n+12z2n+12=n+12-n2n2.n+12. n+12
⇒  ∆EE=2n+1n2≃2nn2∝1n
As angular momentumL=nh2π
⇒  ∆LL=n+1h2π-nh2πnh2π=1n ∝1n

Stream:JEE_ADVSubject:PhysicsTopic:Modern PhysicsSubtopic:Atomic structure
⏱ 2mℹ️ Source: PYQ_2016

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