This is called the "Periodic Law" or "Principle of Periodicity".
Mendeleev arranged the elements according to their atomic weight and valence.
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
He arranged elements in order of increasing atomic masses. He left gaps for undiscovered elements.The elements with same properties were grouped together.
Mendeleev arranged the elements in the periodic table according to their atomic masses.
He arranged the elements in the increasing order of atomic mass and repeating properties so that it is easy to study the properties / reactivities of the elements.
The modern Periodic Table arranges elements based on properties. These properties include valence electrons of the elements and density for example.
your mums atomic acid
Dmitri Mendeleev
Mendeleev arranged the elements according to their atomic weight and valence.
The elements are arranged in order of increasing atomic number. Also elements in the same column have simmilar properties.
Dmitri Mendeleev
Both arrange elements in groups of elements having similar properties.
Both arrange elements in groups of elements having similar properties.
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
In Mendeleev's periodic table the elements are arranged in increasing atomic mass and repeating properties whereas in in the modern periodic table the elements are arranged in increasing atomic number and repeating properties.
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.