Question

So, how do I find the answer?

The average atomic mass recorded on the periodic table for cobalt is 58.933 u. This indicates that the most abundant isotope of cobalt is

cobalt-57.
cobalt-58.
cobalt-59.
cobalt-60.

Answer 1

Is it just rounding?

Answer 2

The average atomic mass will be most closely related to the most common isotope.

Answer 3

Yea basically. If you every do a question where you have to find the atomic mass given all the isotopes the relationship between the atomic mass and most abundant isotope will be much more clear.

Answer 4

so colbat-59?

Answer 5

yes