They have the same number of valence electrons and so have similar reactivity and similar properties.
no its false i put true and it was wrong they are called groups!!!!!
In the periodic table, the groups that contain the most elements are the lanthanides and actinides, which are series of 15 elements each. Additionally, Group 1 (alkali metals) and Group 17 (halogens) also have a substantial number of elements, with each containing 6 elements. However, the lanthanides and actinides are noteworthy for their extended series, resulting in a greater total number of elements represented in those groups.
The elements in the 8 main columns of the Pperiodic Table are called Groups. Groups 1 and 2 are separated from Groups 3 to 8 by a block of elements called the Transition Series and the columns in this series have no specific names.
true
There are 18 groups that make up The Periodic Table of Elements.
There are 18 groups and 7 periods in the modern periodic table.
mendeleev's name for a column of elements was groups.
The periodic table is organized into groups based on similar properties of elements. Each group represents elements that have the same number of valence electrons, resulting in similar chemical behavior. There are 18 groups in the periodic table, each designated by a number and sometimes a name that reflects its characteristics.
The columns of elements on the periodic table are called groups. Each group contains elements with similar chemical properties due to their shared number of electrons in the outermost energy level.
There are total 18 groups in the periodic table that contains elements having same properties.
The columns represent groups or families of elements. There are 18 of them.
because they have similar properties to the other elements in their groups