Question

1. the atomic mass for zn is given as 65.39 amu. explain why there is no actual zinc atom with an atomic mass of 65.39.

Explanation:

The atomic mass of an element on the periodic table is the weighted - average of the masses of its naturally - occurring isotopes. Zinc has multiple isotopes with different masses. The value 65.39 amu is an average value, not the mass of a single zinc atom. Each individual zinc isotope has a whole - number (or very close to a whole - number) mass in atomic mass units.

Answer:

The atomic mass of Zn (65.39 amu) is a weighted - average of its isotopes' masses, not the mass of a single atom. Each isotope has a mass close to a whole number.