18
There are 18 main groups in the modern periodic table of elements.
It groups together elements with similar properties.
4 (including man-made metals)
In the modern version of the periodic table, the elements are arranged in increasing order of the atomic number. The chemical properties of an element can be predicted by its group. For example group 1 elements react violently to give away one electron to form +1 ions where group 18 elements are inert in standard temperature and pressure. This periodic table was introduced by Henry Mosley.
The periodic table has 7 periods and 18 groups. The order of elements is governed by the number of protons.
There are 18 main groups in the modern periodic table of elements.
groups
7 periods and 18 groups are there on the modern periodic table.
by groups and periods
There are 18 groups and 7 periods in the modern periodic table.
118
Both arrange elements in groups of elements having similar properties.
Both arrange elements in groups of elements having similar properties.
It groups together elements with similar properties.
Elements located in groups 4 - 12 in the modern periodic table are considered as transition elements. Transition elements should not be confused with the d-block elements which are from groups 3 - 12.
4 (including man-made metals)
the same amount as the elements as the elements are made up of only one type of atom so there are 127