Concept explainers
Interpretation:
An element has three naturally occurring isotopes. For the calculation of
Concept introduction:
Atoms of the same elements with different numbers of neutrons are isotopes. Atomic mass of an element is the weighted average mass of the
Answer to Problem 111A
To calculate the element’s atomic mass, the most important information needed is naturally occurring isotopes with their atomic mass and the percentage abundance of each isotopes.
Explanation of Solution
The atomic mass of an element is the average of the isotopicmasses, this is also known as the relative atomic mass.
On comparing the isotopic masses of any given element to the relative atomic mass of the element, it can be seen that the atomic mass is close to the isotope with higher
The average atomic mass can be calculated using the following formula:
The naturally occurring isotopes with atomic mass and the percentage of the abundance of the isotope important term use to calculate the atomic mass of the element.
Chapter 4 Solutions
Chemistry: Matter and Change
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