columns are the horizantal lines and groups are are the vertical lines
Horizontal rows of elements in the periodic table are called periods. In a period, the number of protons and electrons increases by one as you move from left to right.
Because if it was just one row, or just one column then it would not be a table!
Because if it was just one row, or just one column then it would not be a table!
There is no difference between "period table" and "periodic table" - they refer to the same thing. The periodic table is a tabular display of the chemical elements organized by atomic number, electron configuration, and recurring chemical properties.
The periodic table is just ONE table. There are not sub-tables. The periodic table is divided into periods (the horizontal rows of the table) and groups (the vertical columns). As you move horizontally across the table, an increase is the atomic number is seen, along with trends in acidity, bonding behavior, and reactivity. The groups are arranged to contain elements that have similar properties. For example, Group 1 is called the alkali earth metals group; all are light, highly reactive metals. Many more trends and groupings exist.
Periods on the periodic table are the rows running horizontally from left to right. There are seven periods in total, each indicating the number of electron shells an element's atoms possess. As you move from the top to the bottom of a period, the electron shells increase by one.
As in any two dimensioned table (Rows and Colomns) each particular element1) is in one 'Cell' at the croccing of R's and C's. 1) An element can be 'chemical' in the periodic table or 'numerical' in a calculus table, or mixed in an accounts table
It can be a table, or it could be a spreadsheet.
Periods are horizontal.Groups are vertical.Just think group = up and downperiod= right and left
One trend that can be identified on the periodic table is the periodicity of elements, which refers to the repeating patterns of properties such as atomic number, atomic mass, and chemical reactivity across rows and columns.
The horizontal rows of elements on the periodic table of elements. Periods gain one proton and one electron as you read the table from left to right.
The column of the periodic table is called group. It is also referred as family.