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1) Characteristics of the elements mentioned.
Chlorine, Iodine, and Astatine are nonmetals. They are in the 17th group the halogens. They're in the p-block
Copper and Vanadium are transition metals. They're in the d-block.
We can group these elements in metals (Copper and Vanadium) and nonmetals (Chlorine, Iodine, and Astatine)