You are watching: The horizontal rows on the periodic table are called
The rebab.netical actions of atoms is controlled by their electron configuration. Since the families of aspects were arranged by their rebab.netical behavior, it is predictable that the individual members of each rebab.netical family will have similar electron configurations.
Families that the periodic Table
Remember the Mendeleev i ordered it the routine table for this reason that facets with the most comparable properties were placed in the very same group. A group is a vertical tower of the routine table. All of the 1A facets have one valence electron. This is what causes these facets to react in the same ways as the other members that the family. The elements in 1A room all very reactive and form compounds in the exact same ratios with similar properties with various other elements. Due to the fact that of your similarities in your rebab.netical properties, Mendeleev put these aspects into the same group. Group 1A is likewise known as the alkali metals. Return most metals tend come be really hard, these metals are actually soft and also can be conveniently cut.
Group 2A is also called the alkaline earth metals. When again, due to the fact that of your similarities in electron configurations, these aspects have similar properties to each other. The very same pattern is true the other teams on the periodic table. Remember, Mendeleev i ordered it the table therefore that elements with the most similar properties to be in the same group on the periodic table.
It is vital to identify a couple of other essential groups on the periodic table by their team name. Group 7A (or 17) facets are also called halogens. This team contains very reactive nonmetal elements.
The noble gases are in team 8A. These elements also have comparable properties to each other, the most far-reaching property being that they are exceptionally unreactive, rarely developing compounds. Us will learn the factor for this later, when we comment on how compound form. The facets in this team are also gases in ~ room temperature.
If you have the right to locate an element on the routine Table, you can use the element"s place to figure out the power level that the element"s valence electrons. A period is a horizontal heat of facets on the routine table. For example, the elements sodium (\(\ceNa\)) and also magnesium (\(\ceMg\)) room both in period 3. The elements astatine (\(\ceAt\)) and also radon (\(\ceRn\)) space both in period 6.
See more: How Do You Say Good Afternoon In Italian : 19 Italian Greetings