What forms from the decay of potassium-37?

Expert Answers
justaguide eNotes educator| Certified Educator

Potassium - 37 decays by positron emission to form the unstable argon - 37. And then another positron emission finally yields chlorine -37 which is stable.

K-37 + e- --> Ar-37

Ar-37 + e- --> Cl-37

Positron emission is a process where a proton is converted to a neutron, a positron and a neutrino. The emission of a positron can be considered to be the same as electron capture as a positron is the anti-matter form of an electron. A positron emission reduces the atomic number of the resultant atom by one though the atomic mass remains the same.

Access hundreds of thousands of answers with a free trial.

Start Free Trial
Ask a Question