Chapter 8: Problem 1
Briefly describe the significance of Mendeleev's periodic table.
Chapter 8: Problem 1
Briefly describe the significance of Mendeleev's periodic table.
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Get started for freeIn the periodic table, the element hydrogen is sometimes grouped with the alkali metals (as in this book) and sometimes with the halogens. Explain why hydrogen can resemble the Group \(1 \mathrm{~A}\) and the Group 7A elements.
Give three examples of first-row transition metal (Sc to \(\mathrm{Cu}\) ) ions whose electron configurations are represented by the argon core.
Arrange these species in isoelectronic pairs: \(\mathrm{O}^{+}, \mathrm{Ar},\) \(\mathrm{S}^{2-}, \mathrm{Ne}, \mathrm{Zn}, \mathrm{Cs}^{+}, \mathrm{N}^{3-}, \mathrm{As}^{3+}, \mathrm{N}, \mathrm{Xe}\) In which of these are the species written in decrease.
Which of these species are isoelectronic with each other: \(\mathrm{C}, \mathrm{Cl}^{-}, \mathrm{Mn}^{2+}, \mathrm{B}^{-}, \mathrm{Ar}, \mathrm{Zn}, \mathrm{Fe}^{3+}, \mathrm{Ge}^{2+} ?\)
What is the most important relationship among elements in the same group in the periodic table?
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