Question

which value of an element is calculated using both the mass and the relative abundance of each of the naturally occurring isotopes of this element?

Answer 1

Answer:

The average atomic mass value of an element is calculated.

Explanation:

The average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$

Answer 2

The value of an element that is used is the molar mass. An isotope is another form of the element. The difference is there are different number of protons in each isotope. Molar mass is a unit to measure the mass of the substance over the amount of substance in terms of moles.