This was the Russian chemist Dmitri Mendeleev in 1869.
He arranged the elements in the increasing order of atomic mass and repeating periodic properties.
If the elements are arranged in the order of their increasing atomic numbers, there properties are repeated in a periodic manner.
In the modern form of periodic table, all elements are arranged in increasing order of their atomic numbers. The periodic properties of elements are functions of their atomic weights.
This statement is a simplified explanation of the periodic law, which states that the properties of elements are periodic functions of their atomic numbers. This periodicity is observed in the arrangement of elements in the periodic table, where elements with similar properties appear in the same column (group) due to their similar electron configurations.
The periodic table is arranged from left to right in the order of atomic numbers.
The periodic law is:When elements on the periodic table are arranged by atomic number, relationships and similarities in properties can be seen.This means that the properties of the elements are periodic, or recurring, functions of their atomic numbers. Because of this phenomenon, it is possible to construct a table that graphically reflects the relationship between the properties and atomic number. This table is called the Periodic Table.
The periodic law establishes that elements are arranged in order of increasing atomic number in the periodic table, and elements with similar properties are grouped together in columns called groups. This law allows for the prediction of an element's properties based on its position in the periodic table.
In 1869 Russian teacher and scientist Dmitri Mendeleev, presented a periodic table of the elements based on atomic weights. The current periodic table is arranged by the atomic numbers of the elements.
Periodic table is arranged by atomic number. elements are arranged in groups and periods.
The periodic table.
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The periodic table is arranged in order of atomic number, not atomic weight. This is because the properties of elements are determined by the number of protons in the nucleus, which is the atomic number. Atomic weight is not used because it can vary due to isotopes of an element.