Concept explainers
Whether is radioactive or stable.
Answer to Problem 4R
is radioactive.
Explanation of Solution
Stable helium has two protons and two neutrons in the nucleus and thus has an atomic weight of This is a very small and a light nucleus. Thus, adding or subtracting even one neutron from its nucleus will have large effect on its stability. Adding two neutrons would cause increase in its atomic weight which will hinder its stability.
Conclusion:
is radioactive and highly unstable having half-life span of
Chapter 20 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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