A: There are various causes of identity crisis, including improper upbringing, lack of affirmation and unpleasant past experiences. Other factors that lead to identity crisis include stress, troubles and societal demands. Lack of ideologies and values, experimenting roles and being a leader may also cause identity crisis.
The Periodic table can also be divided into several families of elements each having similar properties. For our purposes we will define the following ten families: Alkali metals. The alkali metals, found in group 1 of the periodic table, are highly reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron in ionic bonding with other elements.
Pure aluminum is a very reactive element and is rarely found on Earth in its free form. Aluminum acts as an excellent conductor of electricity and heat, but is non-magnetic. When it is exposed to the air, a thin layer of aluminum oxide is formed on the surface of the metal. This prevents further corrosion and rusting.