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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsAtomic structureMedium2 minQB

PhysicsMediumsingle choice

An orbital electron in the ground state of hydrogen has an angular momentum $L_{1}$ and an orbital electron in the first orbit in the ground state of lithium (doubly ionized positively) has an angular momentum $L_{2}$ .

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Answer:

Solution:

Bohr quantisation: $L = nh /2 π$ ; in the ground state $n = 1$ for every hydrogen-like system, independent of $Z$ . So $L_{1} = L_{2}$ .

Subject:PhysicsTopic:Modern PhysicsSubtopic:Atomic structure

⏱ 2mℹ️ Source: QB

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