Question

which element has the greatest average atomic mass?
○ iodine
○ bromine
○ tellurium
○ krypton

Explanation:

To determine which element has the greatest average atomic mass, we recall the atomic masses of the given elements:

• Iodine (I) has an average atomic mass of approximately 126.90 amu.
• Bromine (Br) has an average atomic mass of approximately 79.90 amu.
• Tellurium (Te) has an average atomic mass of approximately 127.60 amu.
• Krypton (Kr) has an average atomic mass of approximately 83.80 amu.

By comparing these values, tellurium has the highest average atomic mass among the options.

Answer:

C. tellurium