Question

порівняйте ряд елементів Дж. Ньюлендса з їх послідовністю в періодичній системі Д.І Менделєєва та знайдіть відмінності​

Answer 1

Ответ:

Відсутні інертні елементи, Sc i V відсутні, Cr i Ti поміняні місцями.

Ряд елементів Дж.Ньюленса: H Li Be B C N O F Na Mg Al Si P S Cl K Ca Cr Ti Mn Fe.

Answer 2

Comparison of J. Newlands' Elements with Mendeleev's Periodic Table and Differences

J. Newlands and D. I. Mendeleev were both scientists who made significant contributions to the development of the periodic table. However, there are notable differences between their approaches and the organization of elements. Let's compare the elements proposed by J. Newlands with the sequence in Mendeleev's periodic table and identify the differences.

J. Newlands' Elements: 1. Hydrogen 2. Lithium 3. Beryllium 4. Boron 5. Carbon 6. Nitrogen 7. Oxygen 8. Fluorine 9. Sodium 10. Magnesium 11. Aluminum 12. Silicon 13. Phosphorus 14. Sulfur 15. Chlorine 16. Potassium 17. Calcium

Mendeleev's Periodic Table: 1. Hydrogen 2. Helium 3. Lithium 4. Beryllium 5. Boron 6. Carbon 7. Nitrogen 8. Oxygen 9. Fluorine 10. Neon 11. Sodium 12. Magnesium 13. Aluminum 14. Silicon 15. Phosphorus 16. Sulfur 17. Chlorine 18. Argon 19. Potassium 20. Calcium

Differences between J. Newlands' Elements and Mendeleev's Periodic Table:

1. Helium: J. Newlands' elements do not include helium, while Mendeleev's periodic table includes it as the second element.

2. Neon and Argon: J. Newlands' elements do not include neon and argon, which are present in Mendeleev's periodic table as the tenth and eighteenth elements, respectively.

3. Additional Elements: Mendeleev's periodic table includes additional elements such as neon, argon, and others that are not present in J. Newlands' elements.

4. Ordering of Elements: The sequence of elements in J. Newlands' elements is not as systematic as in Mendeleev's periodic table. Mendeleev arranged the elements in increasing atomic mass and grouped them based on similar properties, which allowed for the identification of periodic trends.

It is important to note that while J. Newlands' work laid the foundation for the development of the periodic table, Mendeleev's periodic table provided a more comprehensive and organized framework for understanding the properties and relationships of elements.

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