About Chemistry

There are many elements in the periodic table but are in different groups.

Group 1: Alkaline metals. Reactive with water to form hydroxides, releasing hydrogen gas.

Group 2: Alkaline earth metals:

In the middle are the transition metals

as you go to the right, the group with zinc, cadmium, Mercury, the only metal that is liquid in room temperature, and ununbium inclusive, from their to Boron, silicon, arsenic, tellurium, astatine are the poor metals excluding the ones I just said.

After the poor metals, it is the non metals, where oxygen, and nitrogen are gasses, the rest aren't but bromine is a liquid, the second after mercury.

In the non metal section, in group 7, there are the halogens, containing fluorine, chlorine to which are gasses, bromine to which is a liquid, Iodine to which is a solid, and astatine, to which is also a solid.

Finally, the noble gasses to which all have full outer shells which is two if one shell being your outer shell like helium, eight if you have two or more outer shells.