Atomic number is the fundamental property. Elements are arranged in order of increasing atomic number.
Henry Moseley founded modern periodic table. He proved that atomic number is the fundamental property to arrange the elements.
Mosley arranged elements in order of increasing atomic number
Henry Moseley showed that atomic number is more fundamental property of an element than its atomic mass. It formed the base of modern periodic table.
Dmitri Mendeleev (in his periodic table, who arranged according to increasing atomic mass). Niels Bohr in the modern periodic table, where the elements are arranged in increasing atomic number.
The Periodic Table has 118 elements and counting...
The modern Periodic Table arranges elements based on properties. These properties include valence electrons of the elements and density for example.
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.=
Periodic table of elements.
No. When the elements are arranged in order of increasing atomic number there is a periodic repetition of their physical and chemical properties.
The elements are ordered by their mass number.
The different elements are arranged in the increasing order of their atomic number and repeating chemical / physical properties.
112 elements are known, with the existence of addition 6 elements being tentatively proposed.