Classify each element as a representative element, transition metal, or inner‑transition metal.

Determine the oxidation number of sulfur in each of the following substances: (e) Locate sulfur in the periodic table in Exercise 4.47; what region is it in?

Determine whether or not each element is a main-group element. a. tellurium b. potassium c. vanadium d. manganese

Determine whether or not each element is a transition element. a. Cr b. Br c. Mo d. Cs

In which block of the periodic table is uranium (U) found? s block d block p block f block

Group 1A and 2A elements are sometimes called, collectively, “the s-block.” Therefore, what is an analogous name for the entire collection of the group 3A, 4A, 5A, 6A, 7A, and 8A elements?