Factors affecting network performance Not all networks are the same. As data is broken into component parts (often known frames, packets, or segments) for transmission, several factors can affect their delivery.
It is sometimes strange to see what elements combine to make a compound. Sodium, a soft metal which fizzes violently when put into water, and chlorine, a poisonous gas, make sodium chloride (NaCl), otherwise known as common salt! The elements are usually arranged in the Periodic Table.
Metal elements are usually good conductors of both electricity and heat. The dividing line between metals and non-metals is not hard and fast, thus the distinction between Post-transition metals and Metalloids is represented differently on different versions of the Periodic Table. Halogens. 2  The halogen elements are a subset of the nonmetals. 3  They comprise group 17 of the periodic table, from F through At. 4  They generally very chemically reactive and are present in the environment as compounds rather than as pure elements.