A fe ru os uno b mn tc re c f cl br i

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Unformatted text preview: l B. Ar C. K D. S 8. Which one of the following elements has an electron configuration of [Xe]6s24f145d3? A. Re B. Ta C. Mo D. Hf 9. What elements in the periodic table have the following electron configuration: [Nobel Gas]ns2nd5? A. Fe, Ru, Os, Uno B. Mn, Tc, Re C. F, Cl, Br, I, At D. Co, Rh, Ir, Une 10. How much energy is required to ionize a mole of hydrogen atoms (i.e. the energy required to move the electrons from n = 1 to n = ...
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