The conversation between human and AI assistant.
[|Human|] What is the periodic element for atomic number 17?
[|AI|] The periodic element for atomic number 17 is Chlorine, which is represented by the chemical symbol "Cl." It is a member of the halogen group and is a highly reactive and abundant element found in nature, most commonly in the form of sodium chloride or common salt.
[|Human|] 
What is the periodic element for atomic number 17?