Transcription of 1 Problem 9 - Physics and Astronomy at TAMU
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1 Problem 9 - Physics and Astronomy at TAMU
1 Problem configuration has a greater number of unpaired spins? Which one hasa lower energy? [Kr]4d95s1or [Kr]4d10. What is the element and how doesHund s rule apply? SolutionThe element is Pd. The configuration [Kr]4d10has a lower energy, but a highernumber of unpaired spins. This is due to filled subshells having a lower is one of the cases where Hund s rule is Problem answer (except forZ= 19) can be seen in Figure 1. All credit to McGraw-Hill for the 1: The spin configurations forZ= 11 throughZ= 18. All credit toMcGraw-Hill for the imageForZ= 19, the additional electron will occupy the 4ssubshell, giving acondensed configuration of [Ar]4s1.
5.1 Solution In the Maxwell-Boltzmann distribution, the likelihood of nding a particle with a particular velocity v(per unit volume) is given by
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