Generally, the more metallic an element is, the greater the atomic radius and th
ID: 965763 • Letter: G
Question
Generally, the more metallic an element is, the greater the atomic radius and the smaller the first ionization potential. So of all the elements shown on the two graphs, (the Atomic Radii versus Atomic number graph AND on the graph of First Ionization Energy versus Atomic number) what is the element that is most metallic on each of these two graphs? Give the most metallic element on the atomic radii graph first and the most metallic clement on the first ionization energy graph second.
FIGURE 8.9 Atomic Radius versus Atomic Number Notice the periodic trend in atomic radius, starting at a peak with each alkali metal and falling to a minimum with each noble gas Atomic Radii 300 Alkali metals Rb 250 Period 4 transition elements Period 5 transition elements 200 Li 3 150 100 Ar 50 Noble gases 10 40 50 30 Atomic number 20Explanation / Answer
Overall: There is no data for Cs in 2nd graph. So, Rb would be most metaliic as it has highest atomic radii and lowest first ionization energy.
Graph 1: Cs is the most metallic because of highest atomic radius.
Graph 2: Rb would be most metallic due to least first ionization energy.
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