The periodic law states that when elements are arranged according to their atomic number, physical and chemical properties repeat. This periodic law was developed in 1869 by Dmitri Mendeleev and Lothar Meyer. More »

Periodic law, also known as Mendeleev's law, is the concept that the chemical and physical properties of elements are based on an element's atomic weight when arranged by increasing periodic atomic number. Periodic law w... More »

The “Law of Octaves” stated that when the elements are ordered by increasing atomic weights, every eighth group of the elements has similar chemical properties. This pattern is similar to piano octaves, which are also gr... More »

Periodic law, also known as Mendeleev's law, is the concept that the chemical and physical properties of elements are based on an element's atomic weight when arranged by increasing periodic atomic number. Periodic law w... More »

The law of octaves in chemistry is a generalization of a correspondence between chemical properties and atomic weight, in which different elements with similar chemical properties are usually separated by some multiple o... More »

In the periodic table, elements in the same group or family have similar chemical properties because they have the same number of valence electrons in their outer shells. When the group numbers on the periodic table are ... More »

The law of multiple proportions states that when elements combine, they combine in the ratio of small whole numbers. For example, carbon and oxygen react and form CO or CO2 and not CO1.7. More »