Modern Periodic Table has 7 periods and 18 groups.
7 periods and 18 groups are there on the modern periodic table.
There are 18 groups in the periodic table that categorize elements based on their similar chemical properties._rows."
There are 18 groups and 7 periods in the modern periodic table.
The Periodic Table has 7 periods (horizontal rows) and 18 groups. The two groups of 14 elements at the bottom (lanthanides and actinides) are parts of the 6th and 7th periods, between groups 2 and 3, but are placed below to limit the displayed width of the table.
There are 7 periods in the modern periodic table.
7 periods and 18 groups are there on the modern periodic table.
7The periodic table has 7 periods and 18 groups.
7 periods and 18 groups are there on the modern periodic table.
7The Periodic Table has 7 periods and 18 groups.
There are a total of 18 groups on The Periodic Table of Elements.
The periodic table of Mendeleev has 18 groups and 7 periods.
The periodic table of Mendeleev has 18 groups and 7 periods.
There are 18 groups in the periodic table that categorize elements based on their similar chemical properties._rows."
The Periodic Table has 18 groups and 7 periods.
The periodic table has 18 groups ant 7 periods. Hydrogen and helium are considered members of the first period.
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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.