Because they have the same characeristics such as the oxidation states or the valence.
Elements in the same family-assuming family means classifications such as non-metals, metals-have similar properties.
Elements in the same family, or group, have similar physical and chemical properties.
family
family
Elements in the same group or family of the periodic table have the same number of valence electrons, which gives them similar chemical properties. This similarity in valence electron configuration allows them to react in similar ways with other elements.
Elements from a family have similar chemical properties.
a group of elements that have similar properties are arranged one on top of the other on the periodic table. These groups are also called families
Elements in the same group on the periodic table have similar chemical properties because they have the same number of valence electrons. Elements in the same family have similar physical properties because they have the same number of electron shells.
Elements in the same column have similar chemical properties. They are from the same family.
They all have similar chemical properties, take chemical properties to be physical traits and it much resembles a family
Elements have more similar properties when they are found in the same column. Elements in the same column, also known as group or family, have similar chemical properties because they have the same number of valence electrons. Elements in the same row, also known as period, have different properties because they have different electron configurations.
The elements is a group on the Periodic Table are considered a family because they have similar electron configurations and similar properties.