Question

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. krypton (kr) polonium (po) sulfur (s) argon (ar) tellurium (te) radon (rn) xenon (xe) selenium (se)

Explanation:

1. First, identify halogens: Group 17 elements (F, Cl, Br, I, At, Ts).
2. Compare atomic masses of the options to the halogen to their immediate right:

• Krypton (Kr, ~83.80): Next halogen is Bromine (Br, ~79.90) – Kr is heavier, not lighter.
• Sulfur (S, ~32.07): Next halogen is Chlorine (Cl, ~35.45) – S is lighter, but the gap is small, and the question implies a closer mass overlap that would mislead placement.
• Tellurium (Te, ~127.60): Next halogen is Iodine (I, ~126.90) – Te has a slightly higher atomic mass than the halogen immediately to its right. If only given atomic mass, one would place Te where I is (in halogens), while I would be placed left of Te.
• Xenon (Xe, ~131.29): Next halogen is Iodine (I, ~126.90) – Xe is heavier, not lighter.
• Polonium (Po, ~209): Next halogen is Astatine (At, ~210) – Po is lighter, but it is not the classic example of this mass anomaly.
• Argon (Ar, ~39.95): Next halogen is Chlorine (Cl, ~35.45) – Ar is heavier, not lighter.
• Radon (Rn, ~222): Next halogen is Tennessine (Ts, ~294) – Rn is much lighter.
• Selenium (Se, ~78.96): Next halogen is Bromine (Br, ~79.90) – Se is lighter, but the gap is small.

1. Tellurium is the classic element where its atomic mass is higher than the halogen to its right, fitting the question's description perfectly.

Answer:

Tellurium (Te)