Question

Написати про періодичну систему хімічних елементів наддоший варіант таблиці.Хто її розробив і у якому році

Answer 1

Ответ:

таблиця Менделєєва дальше хз

Answer 2

The Periodic Table of Chemical Elements

The periodic table of chemical elements is a tabular arrangement of the chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It provides a systematic way to categorize and understand the properties of different elements.

The modern periodic table consists of rows called periods and columns called groups. The elements are arranged in order of increasing atomic number from left to right and top to bottom. Each element is represented by its atomic symbol, atomic number, and atomic mass.

The periodic table is a powerful tool for chemists and scientists as it allows them to predict the properties of elements and understand their relationships. It provides valuable information about the elements, such as their electronic structure, chemical reactivity, and physical properties.

Development of the Periodic Table

The development of the periodic table was a collaborative effort by several scientists over many years. Here are some key contributors to the development of the periodic table:

1. Dmitri Mendeleev (1834-1907): Mendeleev, a Russian chemist, is often credited with the development of the periodic table. In 1869, he published his version of the periodic table, known as the Mendeleev periodic table. He arranged the elements based on their atomic mass and observed periodic patterns in their properties. Mendeleev's periodic table also left gaps for undiscovered elements, which he predicted would have specific properties.

2. Julius Lothar Meyer (1830-1895): Meyer, a German chemist, independently developed a periodic table around the same time as Mendeleev. He also arranged the elements based on their atomic mass and observed similar periodic patterns. Meyer's work complemented Mendeleev's and provided further evidence for the periodicity of elements.

3. Henry Moseley (1887-1915): Moseley, an English physicist, made significant contributions to the periodic table by determining the atomic numbers of elements. He discovered that the atomic number, rather than the atomic mass, should be the basis for arranging the elements. Moseley's work led to the modern understanding of the periodic table and its organization based on atomic number.

It is important to note that the development of the periodic table was not solely the work of these three scientists. Many others, including Johann Wolfgang Döbereiner, John Newlands, and Glenn T. Seaborg, made important contributions to the understanding and organization of the elements.

Conclusion

The periodic table of chemical elements is a fundamental tool in chemistry. It provides a systematic way to organize and understand the properties of elements. Dmitri Mendeleev, Julius Lothar Meyer, and Henry Moseley were key contributors to the development of the periodic table. Mendeleev's periodic table, published in 1869, is widely recognized as a significant milestone in the understanding of the elements.