Formally, compounds with this functional group may be considered organic derivatives of the chloride anion.
Chlorine tends to react with compounds including M—M, M—H, or M—C bonds to form M—Cl bonds.
Fluor adalah yang paling aktif secara kimia; Yodium dan bromin kurang aktif.
Isotopes Main article: Chlorine has two stable isotopes, 35Cl and 37Cl.
Namun sekali lagi pemberian klorin yang melebihi kadar normal bisa berakibat buruk terhadap kesehatan pengguna kolam renang.
Mostly to makr sure they are still aware of this being a problem.