What is halogen? October 9, 2024June 30, 2020 by Admin The elements of group-17 in periodic table F, Cl, Br, I, and At these five elements together are called halogen. Related Posts:What is electronegativity?Periodic TableDifferent Types of MotionWhat is periodicity? What causes the periodicity in…What is Mandeleeve's periodic law?What is ionization energy?