What will rubidium-83 will decay into by electron capture?

1 Answer
Jul 1, 2014

Rubidium-83 will decay into krypton-83 by electron capture.

Electron capture is a process in which a proton in the nucleus captures one of the inner electrons and forms a neutron.

₁¹H + ₋₁⁰e → ₀¹n

Since a proton becomes a neutron, the number of protons decreases by 1, but the atomic mass stays the same.

Thus, the equation for electron capture in the decay of rubidium-83 is

₃₇⁸³Rb + ₋₁⁰e → ₃₆⁸³Kr

Hope this helps.