You are watching: Why do elements in the same family generally have similar properties?
The snucongo.orgical actions of atom is controlled by their electron configuration. Because the family members of elements were organized by your snucongo.orgical behavior, it is predictable the the separation, personal, instance members of every snucongo.orgical family will have similar electron configurations.
Families the the periodic Table
Remember the Mendeleev i ordered it the periodic table so that elements with the most similar properties were put in the same group. A group is a vertical tower of the routine table. All of the 1A facets have one valence electron. This is what reasons these facets to react in the same methods as the various other members the the family. The elements in 1A space all an extremely reactive and type compounds in the very same ratios with similar properties with other elements. Since of your similarities in your snucongo.orgical properties, Mendeleev placed these elements into the exact same group. Team 1A is likewise known as the alkali metals. Return most steels tend come be an extremely hard, these metals are actually soft and also can be easily cut.
Group 2A is likewise called the alkaline planet metals. Once again, because of their similarities in electron configurations, these elements have comparable properties to every other. The very same pattern is true that other groups on the periodic table. Remember, Mendeleev arranged the table therefore that elements with the most similar properties to be in the same group on the periodic table.
It is vital to recognize a pair of other crucial groups top top the regular table by their team name. Team 7A (or 17) elements are additionally called halogens. This team contains really reactive nonmetal elements.
The noble gases are in team 8A. These elements additionally have comparable properties to every other, the most significant property being the they are extremely unreactive, rarely creating compounds. We will discover the factor for this later, once we discuss how compound form. The aspects in this group are also gases at room temperature.
If you deserve to locate an facet on the regular Table, you can use the element"s place to number out the energy level the the element"s valence electrons. A period is a horizontal heat of facets on the periodic table. For example, the aspects sodium ((ceNa)) and also magnesium ((ceMg)) room both in period 3. The facets astatine ((ceAt)) and radon ((ceRn)) are both in duration 6.
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