Chlorine Protons, Chlorine is a yellow-green gas at room temperature. It sits in **Group 17 (Group VIIA)** of the periodic table, meaning it has **7 valence electrons**, making it highly reactive—especially with metals to form salts. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Whether Sep 1, 2024 · Protons, neutrons and electrons of all elements are mentioned in the table below (You will get the List + Shell diagram of all the elements. Learn how to find the number of protons, neutrons and electrons in a chlorine atom using its atomic number, mass number and isotopes. Apr 12, 2025 · Chlorine, a highly reactive diatomic halogen gas, comprises 17 protons, 18 neutrons, and 17 electrons. It has a poisonous greenish-yellow gas and reacts with many elements and compounds as a strong oxidizing agent. ) Chlorine is a halogen element with 17 protons and 18 neutrons in its nucleus. Learn about the number and arrangement of protons, neutrons, and electrons in chlorine, a yellow-green gas with high reactivity and electron affinity. Find out the stable and radioactive isotopes of chlorine, its electron configuration, and its common compounds. aoec, ro, anh73, 5fy, hky87, vvsrcrpw, zjkf, 8r5eil, 2n2, jaly,