The Periodic Table has 7 periods and 18 groups.
The periods are in a horizontal line and the groups are in a straight line like up to down.
Rows in the Periodic Table are called Periods.There are 7 periods in total.All the elements in period have same number of energy levels.
Period number describes the total number of shells. There are 7 periods in periodic table.
The Periodic Table has 18 groups and 7 periods.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
Periods have same shells. There are 7 periods in periodic table.
Rows in the Periodic Table are called Periods.There are 7 periods in total.All the elements in period have same number of energy levels.
The periods in the periodic table refer to the horizontal rows that indicate the number of electron shells an element's atoms have. There are 7 periods in the periodic table, each corresponding to the number of electron shells found in elements within that period.
4 periods
By atomic number.
Modern periodic table has 7 periods and 18 groups.
Period number describes the total number of shells. There are 7 periods in periodic table.
The Periodic Table has 18 groups and 7 periods.
The rows in the periodic table are called periods. There are 7 periods in periodic table.
Th horizontal rows are referred as periods. There are 7 periods in Periodic Table.
Elements are arranged on the Periodic Table in the order of the atomic number, in groups and periods.
Periods have same shells. There are 7 periods in periodic table.
The periodic table has 7 periods on it.