Section 2: Complete the following problems in your notebook (use your textbook):
1) Define the following:
a. atomic radii b. first ionization energy c. electron affinity d. ionic radii e. electronegativity
2) For each of the terms in #1, state the general period and group trends among the main group elements
3) In general, how do the periodic properties of the d-block elements compare with those of the main group elements? Explain.
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