Not really, I learned about this recently and I am positive that groups are vertical and periods are horizontal. One example would be the noble gases group, it is located in the 18th vertical column from the left
They are called periods and the elements in the row all share the same energy levels (shells in which the electrons are placed).
A horizontal row of elements is called a period.
A period is a row of elements on the periodic table.
Horizontal rows are called periods. There are 7 periods in periodic table.
A period of elements is a horizontal row on the periodic table.
a horizontal row is called a period.a vertical row is called a group
The horizontal rows of the periodic table are called Periods and the vertical rows are called groups.
A period is a row of elements on the periodic table.
A horizontal row on the periodic table of elements is called a period.
Periods
It is a period.
A period is the horizontal row on the Periodic Table of the Elements.
Horizontal rows are called periods. There are 7 periods in periodic table.
A period is the horizontal row on the Periodic Table of the Elements
A period of elements is a horizontal row on the periodic table.
Periods
Horizontal row in a periodic table is called Period.There are seven periods in a periodic table.All elements in a row have same number of electronic shells.
each row in the Periodic Table is called a period.
periodsThere are seven periods, or rows, on the periodic table.