Chemistry Isotopes Solution: Gallium consists of 2 isotopes. One of those isoto...

# Solution: Gallium consists of 2 isotopes. One of those isotopes is Ga-71 with a mass of 70.92 amu with an abundance of 39.892%. What is the mass number of the other isotope?

Problem

Gallium consists of 2 isotopes. One of those isotopes is Ga-71 with a mass of 70.92 amu with an abundance of 39.892%. What is the mass number of the other isotope?

Solution

We’re being asked to calculate the mass number of the other isotope of Gallium-70 (Ga-70)

We can use the following equation:

where:

atomic mass = average atomic mass of the element

f.a. = fractional abundance of the isotope

To get f.a., we simply need to divide the given percent abundance by 100. View Complete Written Solution

Isotopes

#### Q. Write symbols for the following isotopes.Radon-220

Solved • Thu Oct 25 2018 17:57:16 GMT-0400 (EDT)

#### Q. Write symbols for the following isotopes.Polonium-210

Solved • Thu Oct 25 2018 17:57:16 GMT-0400 (EDT)

#### Q. Write symbols for the following isotopes.Gold-197

Solved • Thu Oct 25 2018 17:57:16 GMT-0400 (EDT)