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Begin by visiting Beyond Books and logging in. Once logged in, select “Introduction to
Chemistry Concepts.” Then do the following:
Click on Section 2c, “Electron Basics,” and read through that selection.
After reading that section, click the link for Section 2d, “More Electron Basics”
and read through this page. Pay attention to how ionization energy,
electronegativity and atomic size (radius) are impacted as you move along the
periodic table.
After reading these sections complete two of the following three options:
1. Explain what a valence electron is, and why it might make sense for valence
electrons to be the “bonding/reactive” electrons. Then give an example of an
element that would be likely to bond and one that would not be likely to bond
based on your explanation.
2. Describe how ionization energy and electronegativity change as you move from
left to right along the periodic table and from top to bottom. Explain how all
three of these plays a role in determining whether an atom “wants” to give away
or take electrons.
3. Define what an atom’s atomic radius is. Then, use two analogies or examples to
describe how atomic radius changes across a period or down a group. You may
draw your examples if you like.