29_InstSolManual_PDF_Part3 - Atoms Molecules and Solids...

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29.12. Set Up: Li has 3 electrons, Na has 11 electrons. Solve: (a) The electron configurations are Li: Na: (b) Each has one electron in its outer shell. 29.13. Set Up: Carbon has 6 electrons. Solve: (a) (b) The element of next larger Z with a similar electron configuration has configuration and the element is silicon. Reflect: Carbon and silicon are in the same column of the periodic table. 29.14. Set Up: Beryllium has 4 electrons. Solve: (a) (b) and the element is magnesium. (c) and the element is calcium. 29.15. Set Up: Ne has 10 electrons; Ar has 18 electrons, Kr has 36 electrons. Solve: The electron configurations are Ne: Ar: Kr: These atoms have filled outer shells and are chemically inert. Reflect: These three elements are in the same column of the periodic table 29.16. Set Up: The maximum number of electrons in the K , L , M and N shells is given in Table 29.1. Solve: K shell: Maximum number of electrons is 2. L shell: Maximum number of electrons is 8. M shell: Maximum number of electrons is 18.
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