# How small would an electron have to be in order to become a black hole?

According to quantum mechanics electrons don't behave like everyday objects. Would this prevent the formation of a black hole? If so why?

Also, assuming they behave like everyday objects, at what size would they become a black hole?

I ask because according to various sources an electron could be a point, have a 'classical electron radius' of $10^{-15}$ m, or a diameter of planck's length ($10^{-35}$), and it seems to me that even though an electron has very little mass having no size would make it immeasurably dense.

Edit: Here's a wikipedia page I found that directly answers this question (Black hole electron - http://en.wikipedia.org/wiki/Black_hole_electron).

• In quantum mechanics an electron is treated as a point particle; e.g., its density operator is a delta function (infinite at one location, zero elsewhere... basically... to be more exact it is a delta functional, but whatever). If you are looking for a good quantum theory of gravity, you have your work cut out for you. Good luck getting funding. – hft Sep 3 '15 at 5:12