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.
The Group 1 elements. The Group 1 elements other than hydrogen are called the alkali metals. The Group 1 metals are all highly reactive silvery metals that are so reactive to air and moisture that they must be stored under an inert atmosphere or oil. They are all soft and can be cut easily with a knife.