Question

The average atomic mass recorded on the periodic table for krypton is 83.80 u. This indicates that the most abundant isotope of krypton is (2 points)
Question 2 options:

1) krypton-82.
2) krypton-83.
3) krypton-84.
4) krypton-85.

I honestly don't know this but my guess is krypton 83 but my father said its 84 and he said find out why :/

Answer 1

@Luigi0210

Answer 2

@robtobey

Answer 3

The answer is 3 krypton-84