In this packet, students will color in 4 blank Periodic Tables based on phase, metal vs. This chemistry homework page is perfect for students to analyze the atomic radius trend on the periodic table.
Have a suggestion? Metals — low ionization energies, low electron affinities negative or weakly positive Nonmetals — high ionization energies, high electron affinities negative Metalloids - intermediate ionization energies and electron affinities Owing to their relatively low ionization energies, metals tend to form cations, and when they combine with nonmetals they form ionic substances.
Success Criteria Be able to predict size differences among atoms and ions Be able to predict differences in ionization energy and electron affinity among elements.
All Categories. The differences are often a matter of degree, reflecting changes in the attraction between the nucleus and valence electrons i. Social Studies - History. Periodic Table Trends Turkey. Ionic radii for cations and anions are estimates, because it is virtually impossible to determine experimentally where the electron density of a cation begins and an anion ends in any ion pair. Size increases down a group.
Chemistry , General Science , Physical Science. This results from inefficient shielding by 4 f electrons below the size-determining 6 s electrons.
Essential Concepts: You should try to answer the questions without referring to your textbook. The following plot shows the variation of first ionization energies across the periodic table. This is the result of repulsions between the additional electron and the negative ion that was formed in the first electron affinity process. Science , Chemistry , General Science.
Essential concepts: Instead, the nonmetal oxides tend to add both oxygen and hydrogen from water to make a molecular acid. I also introduce molecular mass here also.