You are watching: Why do elements in the same family have similar properties
The muzic-ivan.infoical actions of atoms is controlled by their electron configuration. Due to the fact that the households of aspects were arranged by their muzic-ivan.infoical behavior, it is predictable that the individual members of each muzic-ivan.infoical family members will certainly have actually similar electron configurations.
Families of the Periodic Table
Remember that Mendeleev arranged the routine table so that aspects via the most similar properties were put in the same group. A group is a vertical column of the regular table. All of the 1A aspects have actually one valence electron. This is what reasons these elements to react in the exact same ways as the various other members of the family. The aspects in 1A are all extremely reenergetic and also develop compounds in the very same ratios with equivalent properties with other facets. Because of their similarities in their muzic-ivan.infoical properties, Mendeleev put these elements into the exact same team. Group 1A is likewise recognized as the alkali metals. Although most steels tfinish to be exceptionally tough, these steels are actually soft and have the right to be conveniently cut.
Group 2A is likewise referred to as the alkaline earth metals. Once aget, bereason of their similarities in electron configurations, these elements have comparable properties to each various other. The very same pattern is true of various other teams on the regular table. Remember, Mendeleev arranged the table so that aspects via the the majority of similar properties were in the very same team on the routine table.
It is essential to recognize a pair of other necessary groups on the routine table by their team name. Group 7A (or 17) facets are additionally called halogens. This group consists of incredibly reactive nonsteel aspects.
The noble gases are in team 8A. These elements also have similar properties to each various other, the many significant property being that they are extremely unreenergetic, seldom forming compounds. We will certainly learn the reason for this later, when we talk about just how compounds develop. The elements in this team are also gases at room temperature.
If you deserve to locate an aspect on the Periodic Table, you have the right to use the element"s place to figure out the power level of the element"s valence electrons. A period is a horizontal row of elements on the routine table. For example, the facets sodium ((ceNa)) and also magnesium ((ceMg)) are both in duration 3. The aspects astatine ((ceAt)) and radon ((ceRn)) are both in duration 6.
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