Question

1. which value of an element is calculated using both the mass and the relative abundance of each of the naturally - occurring isotopes of the element? options: half - life, atomic number, atomic mass, molar volume

Explanation:

The atomic mass of an element is calculated by taking the weighted - average of the masses of its naturally occurring isotopes, where the weights are the relative abundances of the isotopes. The half - life is related to radioactive decay, the atomic number is the number of protons, and molar volume is related to the volume occupied by one mole of a substance at a given condition. None of the other options involve using mass and relative abundance of isotopes for calculation.

Answer:

Atomic mass