QCEVault

Quantum theory — Question 44

Original QCE Vault practice · 1 mark

Q44 · Practice questionComplex familiar1 mark

QUESTION 44

The diagram shows atomic energy levels and a downward transition XX. During transition XX, the atom
Atomic energy levels showing a downward transition
(A)
absorbs a photon with energy equal to the level separation
(B)
emits a photon with energy equal to the level separation
(C)
emits an electron with zero kinetic energy
(D)
changes its baryon number
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