You are watching: Why do elements in the same group of the periodic table have similar properties?
The urbanbreathnyc.comical behavior of atom is regulated by your electron configuration. Because the family members of elements were arranged by your urbanbreathnyc.comical behavior, the is predictable the the individual members of every urbanbreathnyc.comical household will have similar electron configurations.
Families of the routine Table
Remember the Mendeleev i ordered it the periodic table for this reason that facets with the most comparable properties were inserted in the very same group. A group is a vertical tower of the routine table. All of the 1A aspects have one valence electron. This is what causes these elements to react in the same means as the other members that the family. The elements in 1A room all very reactive and type compounds in the very same ratios with comparable properties with other elements. Due to the fact that of their similarities in their urbanbreathnyc.comical properties, Mendeleev placed these facets into the same group. Group 1A is also known as the alkali metals. Although most metals tend come be really hard, these steels are actually soft and also can be easily cut.
Group 2A is likewise called the alkaline earth metals. As soon as again, due to the fact that of their similarities in electron configurations, these aspects have similar properties to every other. The very same pattern is true the other groups on the routine table. Remember, Mendeleev arranged the table therefore that facets with the most similar properties to be in the same group on the periodic table.
It is necessary to acknowledge a pair of other crucial groups ~ above the periodic table by their group name. Team 7A (or 17) elements are additionally called halogens. This group contains really reactive nonmetal elements.
The noble gases space in team 8A. These elements additionally have comparable properties to each other, the most significant property being the they are extremely unreactive, rarely forming compounds. We will find out the factor for this later, as soon as we talk about how compound form. The facets in this group are additionally gases at room temperature.
If you deserve to locate an element on the periodic Table, you can use the element"s place to number out the energy level of the element"s valence electrons. A period is a horizontal row of aspects on the regular table. Because that example, the facets sodium ((ceNa)) and magnesium ((ceMg)) are both in duration 3. The aspects astatine ((ceAt)) and radon ((ceRn)) are both in duration 6.
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