There are 18 main groups in the modern periodic table of elements.
They have simliar properties and same elements although later on more elements were added to the modern periodic table.=Both periodic tables have elements grouped by similar properties. Mendeleev's periodic table had elements arranged in order of increasing atomic mass in columns with similar properties. While many of the elements are in order of atomic mass on the modern periodic table, some are not, as the modern table has elements arranged in order of increasing atomic number.=
117
118
There are 118 elements in the periodic table of elements.
The Periodic Table has 118 elements and counting...
There is 87 elements in the modern periodic table :)
There are 18 main groups in the modern periodic table of elements.
The modern periodic table (May 2012) contain 118 chemical elements.
there are 118 elements
There are 117 elements on the periodic table, however, there is one blank spot that lies on the periodic table of elements, it has the atomic number of 117. If it were discovered, there would be 118 elements on the periodic table of elements.
117 elements so far.
They have simliar properties and same elements although later on more elements were added to the modern periodic table.=Both periodic tables have elements grouped by similar properties. Mendeleev's periodic table had elements arranged in order of increasing atomic mass in columns with similar properties. While many of the elements are in order of atomic mass on the modern periodic table, some are not, as the modern table has elements arranged in order of increasing atomic number.=
117
118
There are 118 elements in the periodic table of elements.
Many elements remained to be discovered in Mendeleev's time. The periodic table helped predict the properties of new elements. The modern periodic table is used to predict properties and reactions of the elements.