Chapter 2 Solutions - Chapter 2 Homework Solutions 2.4....

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Chapter 2 Homework Solutions 2.4. Give the electron configurations for the following ions: P 5+ , P 3– , and Ni 2+ . We can find the electron configurations for the base elements can be found using Table 2.2. P P 5+ : From Table 2.2, the electron configuration for an atom of phosphorus is 1s 2 2s 2 2p 6 3s 2 3p 3 . In order to become an ion with a plus five charge, phosphorus must lose five electrons - in this case the 3s and 3p electrons. Thus, the electron configuration for a P 5+ ion is 1s 2 2s 2 2p 6 . P P 3- : Starting from the same base electron configuration as before, phosphorus must acquire three electrons to gain a charge of -3, which in this case will be added to and fill the 3p subshell. Thus, the electron configuration for a P 3- ion is 1s 2 2s 2 2p 6 3s 2 3p 6 . Ni 2+ : Going back to Table 2.2, we see that the electron configuration for an atom of nickel is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 8 4s 2 . In order to become an ion with a plus two charge, nickel must lose two electrons - in this case the 4s electrons. Thus, the electron configuration for a Ni 2+ ion is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 8 . 2.6. Without consulting Figure 2.6 or Table 2.2, determine whether each of the electron
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Chapter 2 Solutions - Chapter 2 Homework Solutions 2.4....

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