Scientific investigations that involve some kind of testing will make use of observations. generally speaking making observations is the first step of the scientific method.
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
there could be harmful chemicals
At room temperature and normal atmospheric pressure, covalent compounds may exist as a solid, a liquid, or a gas, whereas ionic compounds exist only as solids, Ionic compounds exist in stable crystalline structures. Therefore, they have higher melting and boiling points compared to covalent compounds.
