2nd October 2019

11

# What is the percentage of abundance?

The Percent Abundance is the percentage amount of all the natural occurring isotopes of the element. It is used to find the average atomic mass of the element.

Similarly, it is asked, how Is percent abundance of an isotope calculated?

If you're given the mass of each isotope of an element, and the average atomic mass, you can calculate the percent (%) abundance of each isotope. Let "x" be one of the abundances, and the other abundance is "1-x" then solve the equation using basic algebra.

How do you calculate isotope?

The chlorine isotope with 18 neutrons has an abundance of 0.7577 and a mass number of 35 amu. To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together.

How does the abundance of various isotopes affect an element's atomic mass?

The mass number (A) of an element is equal to the sum of the protons and the neutrons in its nucleus. Isotopes have the same number of protons and electrons, but a different number of neutrons. The mass spectrometer measures the percent abundance of different isotopes in a given sample.