number of orbitals
The elements in the same vertical columns, also called groups or families, all share common traits with each other (for example, all of the alkali metals react violently when placed in water.) This is because all of the elements in one group contain the same number of valence electrons.
Elements in vertical columns in the modern periodic table are known as groups. They share similar chemical properties due to having the same number of electrons in their outermost energy level. Each group is characterized by a specific number of valence electrons.
They are called groups and the horizontal rows are called periods
Each vertical column in the periodic table is called a group. Elements within the same group share similar chemical properties due to their similar electron configurations. There are 18 groups in the modern periodic table.
Vertically opposite angles are the angles that are opposite each other when two lines cross. Vertical means they share the same vertex.
Family of elements share similar chemical properties due to having the same number of valence electrons. This results in comparable reactivity and bonding patterns within a group of elements. Additionally, they often exhibit a trend in physical properties such as atomic size and electronegativity.
EPS represents the portion of a company's profit allocated to each outstanding share of common stock
Elements in the same column, or vertical column, are known as "group" or "family." Each group contains elements with similar chemical properties due to their shared number of valence electrons.
On the periodic table, the elements fall into groups (the vertical columns) which are often called families. The reason is that elements in a group are chemically similar to each other.
"Vertical" in this case means they share the same Vertex (corner point), not the usual meaning of up-down.
they have the same energy levels
That is a silly answer, not meant to be helpful; meant to be annoying and show ignorance. Elements are "grouped" in 18 (vertical) columns or "families". Without getting too complicated, the "grouping" indicates that all elements in that same group or family share similar chemical or physical characteristics - just as members of the same "human family" do . . . . resemble each other.