An isolated hydrogen atom has the following energy levels (values in eV): , , ,

PHYSICS · Single correct · CBSE · Physics · Atoms · Atoms

Problem

An isolated hydrogen atom has the following energy levels (values in eV): n=1:−13.6n=1: -13.6, n=2:−3.40n=2: -3.40, n=3:−1.51n=3: -1.51, n=4:−0.85n=4: -0.85. A photon with energy 1.89 eV1.89\,\text{eV} is detected in the atom’s emission spectrum. Which electron transition most likely produced this photon? (a) n=4→n=2n=4 \rightarrow n=2 (b) n=2→n=3n=2 \rightarrow n=3 (c) n=3→n=2n=3 \rightarrow n=2 (d) n=4→n=3n=4 \rightarrow n=3

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