Which of the following elements has the greatest average atomic mass?

• A. Tellurium (Te)
• B. Krypton (Kr)
• C. Bromine (Br)
• D. Iodine (I)

Answer: (D)

Verified step by step guidance

1. Step 1: Understand that the average atomic mass of an element is the weighted average of the masses of its naturally occurring isotopes, reflecting their relative abundances.
2. Step 2: Identify the elements given in the problem: Tellurium (Te), Krypton (Kr), Bromine (Br), and Iodine (I).
3. Step 3: Recall or look up the average atomic masses of each element from the periodic table or a reliable source. These values are typically listed in atomic mass units (amu).
4. Step 4: Compare the average atomic masses of the elements to determine which one is the greatest.
5. Step 5: Conclude that the element with the highest average atomic mass among the options is the correct answer.