Lothar Meyer arranged the elements in order of increasing atomic mass. This arrangement is known as the periodic table of elements.

Explanation:

Periodic table of elements is a tabular representation of the chemical elements. It is arranged in order of increasing atomic number, electron configuration, and chemical properties. However, Lothar Meyer arranged the elements in order of increasing atomic mass.

Atomic mass is the mass of an atom of a chemical element. It is the sum of the number of protons and neutrons in the nucleus of an atom. Lothar Meyer arranged the elements in order of increasing atomic mass because he noticed that there was a periodicity in the chemical properties of the elements when they were arranged in this way.

Meyer was not the only person to arrange the elements in this way. A few years later, Dmitri Mendeleev independently arranged the elements in order of increasing atomic mass and also noticed the periodicity in the chemical properties of the elements. However, Mendeleev is credited with the discovery of the periodic table of elements because he was the first person to predict the existence of undiscovered elements and their properties based on the periodicity of the known elements.

In conclusion, Lothar Meyer arranged the elements in order of increasing atomic mass, which led to the discovery of the periodicity in the chemical properties of the elements. This discovery laid the foundation for the development of the periodic table of elements and our understanding of the behavior of the elements.

Arranging Elements in Order of Increasing Atomic Mass: Explanation of Lothar Meyer's Contribution

Lothar Meyer was a German chemist who lived in the 19th century. He was one of the pioneers of the periodic table of elements. In 1864, he published a paper in which he arranged the elements in order of increasing atomic mass. This was a significant contribution to the development of the periodic table, as it provided a basis for understanding the properties of elements.

The following are the reasons why Lothar Meyer arranged the elements in order of increasing atomic mass:

1. Atomic Mass is a Fundamental Property of Elements:

Atomic mass is a fundamental property of elements. It is the mass of an atom of an element, which is composed of protons, neutrons, and electrons. The atomic mass of an element is a key factor in determining its chemical properties. Therefore, arranging the elements in order of increasing atomic mass provides a basis for understanding the chemical properties of elements.

2. Atomic Mass is Measurable:

Atomic mass is a measurable property of elements. It can be determined using a variety of methods, such as mass spectrometry. Therefore, arranging the elements in order of increasing atomic mass is a practical way of organizing them.

3. Atomic Mass is Related to Other Properties of Elements:

Atomic mass is related to other properties of elements, such as density and atomic volume. Therefore, arranging the elements in order of increasing atomic mass provides a basis for understanding these properties.

The following are some of the benefits of arranging the elements in order of increasing atomic mass:

1. It Provides a Basis for Understanding the Properties of Elements:

Arranging the elements in order of increasing atomic mass provides a basis for understanding the properties of elements. Elements with similar properties are grouped together in the periodic table, which makes it easier to study and understand their properties.

2. It Helps in Predicting the Properties of Newly Discovered Elements:

Arranging the elements in order of increasing atomic mass helps in predicting the properties of newly discovered elements. By comparing the properties of an element with those of similar elements in the periodic table, scientists can make predictions about its properties.

3. It Provides a Basis for the Development of New Chemical Compounds:

Arranging the elements in order of increasing atomic mass provides a basis for the development of new chemical compounds. By understanding the properties of elements, scientists can create new compounds that have specific properties.

In conclusion, Lothar Meyer's contribution to the development of the periodic table by arranging the elements in order of increasing atomic mass was significant. It provided a basis for understanding the properties of elements and helped in predicting the properties of newly discovered elements. Arranging the elements in order of increasing atomic mass remains an important tool for understanding the properties of elements today.