This group has elements of three states of matter at room temperature and houses the most electronegative element.
J. L. Lassaigne developed a test in which sodium is "fused" with nitrogen, sulfur, and elements from this group. An isotope of the heaviest element in this group is created by bombarding bismuth with alpha particles. Another element from this group is used to detect (*) starch and turns dark blue in its presence. This group has elements of three states of matter at room temperature and houses the most electronegative element. Its members are highly reactive because each element has seven valence electrons. For 10 points, name this group whose members include Astatine, Iodine, and Fluorine.
J. L. Lassaigne developed a test in which sodium is "fused" with nitrogen, sulfur, and elements from this group.
{Halogen}s [prompt on Group {17}] [MB]