Question

1. construct explanations assume that one particular atom of rhodium (rh) has a mass of 102. why does this number not exactly match the atomic mass of 102.91 listed on the periodic table for this element?

Explanation:

The atomic mass on the periodic table is a weighted - average of all the isotopes of rhodium. The mass of 102 is likely the mass of a single isotope, while the 102.91 is an average considering the relative abundances of all rhodium isotopes.

Answer:

The atomic mass on the periodic table is a weighted - average of all isotopes of rhodium, while 102 is likely the mass of a single isotope.