Legislative size is a trade off between efficiency and representation; the smaller the legislature, the more efficiently it can operate, but the larger the legislature, the better it can represent the political diversity of its constituents.
The most chemically reactive metals are the alkali metals. Francium is the most reactive of these and of all metal (although it is present on earth only in exceedingly small q â¦ uantities, due to its radioactivity). The most reactive element available in useful quantities in Flourine.
Group 18 in the periodic table is the last column on the periodic table. This family is known as the Noble Gases and is so special because of their inability to react. They ha â¦ ve a full outer shell of electrons, which means they are very stable and can be found in nature as isolated elements.