You are watching: Why do elements in the same family generally have similar properties
The lutz-heilmann.infoical habits of atoms is controlled by their electron configuration. Since the family members of aspects were arranged by their lutz-heilmann.infoical actions, it is predictable that the individual members of each lutz-heilmann.infoical family members will have actually similar electron configurations.
Families of the Periodic Table
Remember that Mendeleev arranged the regular table so that elements via the many equivalent properties were placed in the very same team. A group is a vertical column of the periodic table. All of the 1A facets have one valence electron. This is what reasons these elements to react in the very same ways as the various other members of the family members. The aspects in 1A are all incredibly reactive and form compounds in the very same ratios with similar properties via other aspects. Since of their similarities in their lutz-heilmann.infoical properties, Mendeleev put these aspects right into the very same team. Group 1A is also well-known as the alkali metals. Although the majority of steels tend to be very difficult, these steels are actually soft and can be easily cut.
Group 2A is additionally referred to as the alkaline earth metals. Once aacquire, because of their similarities in electron configurations, these facets have equivalent properties to each other. The exact same pattern is true of other groups on the regular table. Remember, Mendeleev arranged the table so that elements via the the majority of similar properties were in the very same team on the routine table.
It is important to acknowledge a pair of various other essential teams on the routine table by their team name. Group 7A (or 17) facets are also referred to as halogens. This team contains exceptionally reenergetic nonmetal facets.
The noble gases are in group 8A. These facets likewise have equivalent properties to each other, the a lot of substantial residential property being that they are extremely unreenergetic, seldom creating compounds. We will certainly learn the factor for this later on, when we discuss exactly how compounds form. The facets in this group are likewise gases at room temperature.
If you deserve to locate an facet on the Periodic Table, you deserve to usage the element"s place to number out the power level of the element"s valence electrons. A period is a horizontal row of facets on the periodic table. For instance, the aspects sodium ((ceNa)) and also magnesium ((ceMg)) are both in period 3. The aspects astatine ((ceAt)) and also radon ((ceRn)) are both in period 6.
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