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The lightest noble gases, such as helium and neon, are completely inert- they do not form any chemical compounds whatsoever. The heavier noble gases, in contrast, do form a limited number of compounds. Explain this difference in terms of trends in fundamental periodic properties Match the words in the left column to the appropriate blanks in the sentences on the right less than high over a filled lose decreases positive an unfilled increases low gain Reset Help All of the noble gases have outer quantum level, very first ionization energies, and values for the electron affinity, thus, the noble gases are particularly unreactive. The lighter noble gases will not form any compounds because the lonization energies of both He and Ne are 2000 kJ/mol. Because ionization energy you move down a column, you find that the heavier noble gases (Ar. Kr. and Xe) do form some compounds. They have ionization energies that are close to the ionization energy of H and thus can an electron be forced to as
For transition elements, describe the trends in atomic radius as you move across a period in the periodic table. Match the items in the left column to the appropriate blanks in the sentences on the right. increase stay roughly constant all electrons Thighest-1 decrease Thighest outermost electrons Reset Help The radii of transition elements across each period. Across a row of transition elements, the number of electrons in the outermost principal energy level is nearly constant. As another proton is added to the nucleus with each successive element, another electron is added as well and goes into an level. The number of stays constant, and the effective nuclear charges keeping such trends in atomic radius as you move across a period in the periodic table.
Identify the more metallic element from each of the following pairs. Match the words in the left column to the appropriate blanks in the sentences on the right. more less When comparing Sr and Sb, Sr is When comparing Cu and Ru, Cu is When comparing As and Bi, As When comparing Cl and Se, Cl is metallic than Sb. metallic than Ru. metallic than Bi metallic than Se.. Reset Help