lithium and fluorine
Lithium donates an electron to fluorine and make the fluorine with a negative charge and a full outer shell. Lithium consequently get a positive charge and a full outer shell. They then are attracted to each other an form a giant ionic lattice.
Carbon and hydrogen are organic so they don't
Nitrogen and Oxygen are also organic.
Chlorine can form ions but not with silicon
Remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species.
They only have one electron in their outer most shell which makes them very reactive.
Uses fins to walk , because they would have to adapt and evolve
