groups run top to bottom
periods run left to right
The periodic table
The periodic table of elements is divided into groups and periods. The groups (columns) are elements with similar chemical properties, while the periods (rows) represent the number of electron shells in an atom. The main subcategories include metals, nonmetals, and metalloids.
The Horizontal Rows are called Periods & the Vertical are Families or Groups.
The vertical "groups" group elements by chemical properties the horizontal "periods" group elements by the number of energy levels
Periods are horizontal.Groups are vertical.Just think group = up and downperiod= right and left
Because they are!
Groups are vertical and contain chemical elements with similar properties; periods are horizontal.
No, columns of elements in the periodic table are called groups or families. Periods are the rows of elements that run horizontally across the table. Each period corresponds to the number of electron shells an element's atoms have.
The periodic table of Mendeleev has 18 groups and 7 periods.
The periodic table
The periodic table of elements is divided into groups and periods. The groups (columns) are elements with similar chemical properties, while the periods (rows) represent the number of electron shells in an atom. The main subcategories include metals, nonmetals, and metalloids.
In the periodic table chemical elements are orderd in periods and groups.
Elements have groups, periods and even blocks but not class.
there are grouped in clomesand rows ad groups
There are 18 groups in the periodic table that categorize elements based on their similar chemical properties._rows."
7 periods and 18 groups are there on the modern periodic table.
The periodic table of Mendeleev contain now 118 chemical elements arranged in groups and periods.