Electrons orbit the nucleus in shells. There can be several shells and: each shell is at a different distance from the nucleus the first shell is nearest to the nucleus different shells hold a ...

Electrons in atoms occupy energy levels, also called electron shells, outside the nucleus. Different shells can hold different maximum numbers of electrons. The electrons in an atom occupy the ...

All of the atoms that make up the wire have something in common -- each has one or two electrons in its outer-most shell. These electrons do not have a strong bond with the rest of the atom.

A silicon atom has four electrons in its outer shell and bonds tightly with four surrounding silicon atoms creating a crystal matrix with eight electrons in the outer shells. However, phosphorus ...