mendeleev arranged the pt by properties of the element we arrange by?
periods are the rows and families are the columns
The columns are known as groups.
There are 18 columns on the periodic table.They are called groups or families.
The columns on the periodic table are called Groups.
It is true that periodic table is divided into rows and columns. The rows are called periods and columns are called groups.
The columns are called groups (or, sometimes, families). The rows are called periods.
periods are the rows and families are the columns
The columns are known as groups.
The vertical columns of a periodic table are called groups or families. They share similar chemical properties because they have the same number of valence electrons.
The vertical columns of the periodic table are called groups or families.
There are 18 columns on the periodic table.They are called groups or families.
The columns on the periodic table are called Groups.
The columns on a periodic table are called "groups" or "families." These columns contain elements with similar chemical properties due to their shared number of electrons in the outermost energy level.
It is true that periodic table is divided into rows and columns. The rows are called periods and columns are called groups.
The slim and graceful Greek columns are called Ionic columns. They are characterized by their volutes, which are spiral scrolls at the top of the column. Ionic columns are known for their elegance and were commonly used in ancient Greek architecture.
Vertical columns are called groups. Horizontal rows are known as periods.
they are called groups or families