How does the chemical reactivity of alkali metals vary on going down in group 1 of the periodic table? (b) How does the chemical reactivity of the halogens vary on going down in group 17 of theperiodic table?
ChemistryClass 10ICSEAnswered 27 Mar 2026
Answer
(a) In group 1 of alkali metals, the chemical reactivity increases from lithium to francium.
(b) In group 17 of halogen elements, the chemical reactivity decreases from fluorine to iodine.