Describe what changes occur during electron capture. describe what changes occur during electron capture. the mass number and atomic number increases. the mass number and atomic number decreases. the mass number is unchanged and the atomic number decreases. the mass number and atomic number do not change. the mass number is unchanged and the atomic number increases.

Electron capture is a process when the electrons of the inner orbital of an atom, are captured but the nucleus and the emission of neutrino happens, and the protons are changed into neutrons.

In electron capture, the element changes into another atom with a change in the number of the proton, usually decreasing. An example is a carbon with proton 6 changes into boron with proton 5.

Thus, the correct option is C, the mass number is unchanged and the atomic number decreases.

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