Why is atomic mass not a whole number? The atomic mass of potassium - ProProfs Discuss
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Why is atomic mass not a whole number?
The atomic mass of potassium (K) listed on the periodic table is 39.1o atomic mass units.



A. Potassium atoms have an odd number of protons
B. Potassium atoms exist as positive cations
C. The atomic mass of an element is an average of the atomic masses of all of the isotopes of that element occurring in nature
D. Potassium atoms give up electrons when they bond with non-metals

This question is part of Grade 10 Science Exam (Practice)
Asked by Penelopeqs, Last updated: Jul 07, 2020

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penelopeqs

Penelopeqs

Answered Jun 22, 2018

The atomic mass of an element is an average of the atomic masses of all of the isotopes of that element occurring in nature
 

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