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Chapter 5: Problem 10
How many electrons does Na have in shell: a) \(\quad n=1\) ? b) \(n=2\) ? c) \(\quad n=3\) ?
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How does the core charge for Na compare to the core charge for \(\mathrm{Li} ?\)
How does the core charge on a neutral atom change in moving from left to right across a row (period) of the periodic table?
Based on its position in the periodic table, what is the valence shell and what is the core charge for C? Explain your reasoning.
Complete the following table: $$ \begin{array}{|c|c|c|c|c|} \hline \text { Atom } & \begin{array}{c} \text { Total number } \\ \text { of electrons } \end{array} & \begin{array}{c} \text { Number of } \\ \text { valence shell } \\ \text { electrons } \end{array} & \begin{array}{c} \text { Number of } \\ \text { inner shell } \\ \text { electrons } \end{array} & \text { Core Charge } \\ \hline \text { H } & 1 & & & \\ \hline \text { He } & & & & \\ \hline \text { Li } & & & & \\ \hline \end{array} $$
a) Based on its position in the periodic table, predict the valence shell, core charge, and number of valence electrons for \(\mathrm{Rb}\) and add these values to Table 1 . b) Using the shell model and referring to the Coulombic Potential Energy relationship (equation in Model 1, CA 3), explain clearly how the IE \(_{1}\) for \(\mathrm{Rb}\) is consistent with your answer to part a.
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