Question

How can I write the electron capture equation?

Answer 1

Well, in general, an electron from the core is absorbed into the nucleus... it thus combines with a proton to form a neutron and emit an X-ray photon.

`""_(1)^(1) p + ""_(-1)^(0) e -> ""_(0)^(1) n + ""_(0)^(0) X`

CHALLENGE: What is the reverse of electron capture? Hint: the electron is a beta minus particle.