there are 7 periods in the periodic table118
7 periods
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7 periods and 18 groups are there on the modern periodic table.
Modern periodic table has 7 periods and 18 groups.
Th horizontal rows are referred as periods. There are 7 periods in Periodic Table.
There are 18 groups and 7 periods in the modern periodic table.
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
There are 18 periods in the periodic table. The periods are divided according to the chemical properties of elements. Elements in a group have similar properties.
There are a total of 18 groups on The Periodic Table of Elements.
7 periods and 18 groups are there on the modern periodic table.
The periodic table of Mendeleev has 18 groups and 7 periods.
118 elements.
The Periodic Table has 18 groups and 7 periods.
In the periodic table of the elements there are 7 periods and 18 groups. The rows are called periods and columns are called groups. You may be getting confused by the lanthanides and actinides. These groups of elements are found in two rows at the bottom and seem to not be a part of the table. However, if you find and extended version of the table you will see that, technically, these two rows belong in Periods 6 and 7.
The periodic table has 7 periods on it.
Modern periodic table has 7 periods and 18 groups.
Th horizontal rows are referred as periods. There are 7 periods in Periodic Table.
The modern periodic table has seven periods.
There are 18 groups and 7 periods in the modern periodic table.