Electrons in the electron cloud of an atom are located at specific energy levels. We cannot say with certainty exactly where the electron is physically located at any given moment, and that's because electrons can be at different physical locations at any instant of time. There are quantum mechanical reasons for this, and just one example of the "variability" of location of an electron is quantum mechanical tunnelling.
Electron clouds in an atom are described by the electron probability distribution function, which is not a single equation but rather a three-dimensional probability density function. It is determined by solving the Schrödinger equation for the electron in the atom. This function gives the probability of finding an electron at a particular location in space around the nucleus.
it really depends i know for sure that its 3 electron clouds
Around the atomic nucleus, on electron shells.
in the electron clouds of an atom
Fermium has seven electron shells.
Zirconium has four electron clouds surrounding its nucleus. These clouds correspond to the four electrons in zirconium's outermost energy level.
An atomic orbital is a region in an atom in which there is a high probability of finding electrons.
Technetium has 43 electrons placed on five electron shells.
STUFF!
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They are the probability of finding the electrons.