1.

Whymostoftheclements have fractional atomic masses?

Answer»

Answer:

The atomic masses of mostelementsare fractional because they exist as a mixture ofisotopesof different masses.

Explanation:

Most elements occur as a mixture of isotopes of different masses. The fractional atomic masses arise because of this mixture.

Avg. mass = total mass of all atoms/number of atoms.

Before we calculate the average mass of atoms, let's use an analogy.



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