Atomic Structure And Periodic Table
In The periodic table, there are two categories; The periods and the groups. Periods run horizontally along the periodic table and determine the amount of shells inside the element. Groups run vertically down the periodic table and determine the number of protons on the outer shell of the element.
The Main Groups
The main groups in the periodic table are Group 1 , Transition Metals, Group 7 and Group 0.
Group 1: Alkali Metals
Alkali metals are the chemical elements found in Group 1 of the periodic table. The alkali metals include: Lithium (Li), Sodium(Na), Potassium(K), Rubidium (RB), Cesium (Cs), and Francium (Fr). These particular elements were given the name "alkali" because they react with water to form hydroxide ions, creating neutral solutions, which are also called alkaline solutions. These metals are characterized by their soft texture and silvery color. They also have low boiling and melting points and are less dense than most elements. Lithium, sodium, and potassium float on water because of their low density.
The Bridge: Transition Metals
The Transition Metals is the middle part of the periodic table.