Afternoon(2) Potassium-Argon dating can be used to identify the age of things that are billions ofyears old. When 40 K decays, it has two main decay paths. About 89.3% of the time, the40 K decays via B- decay. The other 10.7% of the time, it decays via electron capture.This process is used to identify something as being 6.93 x 10° years old. The half-life ofpotassium-40 is 1.248 × 10ºy.(a) Write a complete decay equation for the B- decay.(b) At the time of dating, what is the ratio of potassium atoms to argon atoms?(c) Which of 40 K, 40 Ar, or 40Ca has the lowest binding energy per nucleon?(d) Which of 40 K, 40 Ar, or 40Ca has the lowest mass deficit?

Radioactivity is the phenomenon in which an unstable nucleus undergoes radioactive decay to form a…

Answered: (2) Potassium-Argon dating can be used…

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