It is rather difficult to answer this question without some sort of context. However, in general terms, I would say that an electron will always occupy the lowest possible energy state. If one is considering a single atom, then an electron will always occupy the lowest energy orbital (for a full list of orbital energies see the Wikipedia article "electronic configuration"). However, if other atoms are present then the electron will not necessarily occupy the lowest energy orbital. For example, in the formation of sulfur hexafluoride electrons are promoted from the 3s and 3p sub shells to the 3d sub shell, whilst this does require energy, the energy released in bonding with fluorine more than compensates for this.
I hope this answers your question
They are not.
Yes, but valence electrons are always in the outer electron shell of an atom.
The Natural Thing was created in 1989.
It isn't less volatile, it is exactly the same. As soon as an electron (for example) meets an anti-electron, they will both disintegrate - whether the positron (anti-electron) is artificial or natural.
In the Greek language electron is amber, natural mineral with electrical properties, the first discovered.
There are electron particles in O2 as well as in every thing in your body.
A Very Natural Thing was created in 1974.
no. electron shells are just what contain the electrons. the inner most shell contains 2, then 8 and so on.
The electron does not lose its energy. The electron gets absorbed by the "wall" and the electron/energy becomes part of the "wall" system.
The duration of A Very Natural Thing is 1.33 hours.
Yes, it is a natural thing to have a crush on someone when you are a teenager.
In the common case, electrons have a "negative" charge. There are also such thing as a "positron," which is simply a positively-charged electron.