Workshop Chapter 7 in-class key

Workshop Chapter 7 in-class key - Workshop Chapter 7 1. The...

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Workshop Chapter 7 1. The table for electron affinity does not have entries for Be, N, or Ne. Why not? It has to be exothermic for the reaction for the reaction of X + e ¯ X ¯ to happen. For each of these atoms the additional electron is going into a higher energy level. Be – going from [He]2s 2 to [He]2s 2 2p 1 N – the additional electron would be the first paired (pairing energy) Ne – the additional electron is added to a new shell 2. Na + and F ¯ are isoelectronic. Which ion would you expect to be larger, and why? Fluoride would be larger, because of the smaller nuclear charge. 3. The hydrogen 1s orbital and the oxygen 2p orbital have identical ionization energies of -1.31 MJ/mol. However, when we look at the order of orbital filling, it is clear that the 1s orbital is lower in energy than both the 2s and 2p orbitals. a) Reconcile these two observations. 1s only is necessarily lower in energy than 2p for orbitals in the same atom (i.e., the same nuclear charge)
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Workshop Chapter 7 in-class key - Workshop Chapter 7 1. The...

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