Question

Which element has the largest average

atomic mass?
A. Argon (Ar)
B. Xenon (Xe)
C. Krypton (Kr)
D. Neon (Ne)

Answer 1

Answer:Xenon

Step-by-step explanation:

The average atomic mass of an element is defined as the sum of the masses of its isotopes,each multiplied by their natural abundances.

Option A:

Argon has a average atomic mass of
`39.948 amu`

Option B:

Xenon has a average atomic mass of
`131.293 amu`

Option C:

Krypton has a average atomic mass of
`83.798 amu`

Option D:

Neon has a average atomic mass of
`20.1797 amu`

So,Xenon has the highest average atomic mass.