Question

having problems staying logged in or are you experiencing issues? please visit our for solutions. i am definitely not a halogen. but if all you knew about me was my atomic mass (not my atomic number or properties), then you might expect me to be located one element over in the halogen family. who am i? view periodic table tap on an option below to select or deselect an answer. polonium (po) xenon (xe) krypton (kr) argon (ar) selenium (se) sulfur (s) tellurium (te) radon (rn)

Explanation:

Step1: Recall halogen elements

Halogen elements are Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At), Tennessine (Ts).

Step2: Analyze the condition

The element is not a halogen but has an atomic - mass close to that of a halogen such that one might expect it to be in the halogen family if only atomic mass was considered. Selenium (Se) has an atomic mass close to that of bromine (Br). Selenium is in group 16 and bromine is in group 17.

Answer:

Selenium (Se)