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.
metals like sodium,potassium and lithium are highly reactive metals which react vigorously with air at room temperature. the reaction is very exothermic. itthey can also be not stored in water as they react with water as well..so they are stored under kerosene to prevent the metal as well as any kind of destruction.ecause these are highly reactive metals and could catch fire by reacting with oxygen in the presence of air. ...........that 's why they are stored under oil to prevent their contact with oxygen.