Final answer:
Chlorine contains 17 protons and has two natural isotopes, chlorine-35 and chlorine-37, with different abundances.
Explanation:
Chlorine contains 17 protons, as it has an atomic number of 17. It also has 18 neutrons in each nucleus, giving it a mass number of 35.
When chlorine occurs naturally, it has two isotopes: chlorine-35 and chlorine-37. The abundances of these isotopes are approximately 75% chlorine-35 and 25% chlorine-37.
Learn more about Chlorine here:
https://brainly.com/question/43111466
