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A. ) P and Pr both have one electron each. Pr has a bigger atomic size.

B. ) Od, Ri, and E are in the same series as P, C, and 1. In terms of
atoinic size, P is the biggest while C is the smallest. E is a metal
while I is a non-metal. Od is smaller than Ri in atomic size.

C. ) O has a bigger atomic size than E in the same group. Y is also a
bigger atom than C in the same group. Ris inore nonmetallic than
Pe but more metallic than Ti.