A) The circles in the diagrams below represent energy levels in an atom, and the

Question

A) The circles in the diagrams below represent energy levels in an atom, and the arrows show electron (blue dot) transitions from one energy level to another. (The spacing between circles represents differences in energy: A larger spacing means a greater difference in energy.) Assuming that the transitions occur as photons are emitted, rank the atoms based on the photon energy, from highest to lowest

B)The diagrams below are the same as those from Part A. This time, rank the atoms based on the wavelength of the photon emitted as the electrons change energy levels, from longest to shortest.

Explanation / Answer

A.)E=13.6[1/n2^2 -1/n1^2]

For 1,

E1=13.6[1/1 -1/4]=10.2 eV

For 2,

E2=13.6[1/1 -1/9]=12.08 eV

For 3,

E3=13.6[1/4 - 1/25]=2.86 eV

For 4,

E4=13.6[1/1 - 1/25]=13.056 eV

So E4>E2>E1>E3

So 4>2>1>3

B.)E=hc/lambda

So wavelength is inversely proportional to Energy

So 3>1>2>4 (longest to shortest)

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