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Who was the first scientist known to organize elements in order of their increasing mass?
Mendeleev from Russia was the first person to organize the periodic table of the elements
What is mendeleev's periodic law?
The physical and chemical properties of the elements are periodic functions of their atomic numbers.The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic numbers. They influence the characters of an element more than atomic weight.
What are the contributions to the periodic table by Moseley?
Moseley was the person who found that the periodicity directly relates with the atomic number of elements.
In 1913 who updated the periodic table by changing how the elements are arranged?
Henry Moseley updated the periodic table in 1913 by arranging elements by atomic number instead of atomic mass. His work reorganized the elements and corrected inconsistencies in the periodic table.
Who was the scientist responsible for the first periodic table?
To study elements many attempts were made to classify the elements.Dobereighner tried to arrange the elements int groups of three and called them as Dobereighner' triads.Newland also categorized the elements in groups of eight like the musical notesand called them Newland's octaves.But the most credited person for creation of periodic table was Dimitry Ivanovich Mendeleev who arranged the elements on the basis of increasing atomic massesand made an actual periodic table placing all the discovered elements discovered at that time. Not only that, he also left spaces for future elements to be discovered.But there were some defects in his table which were corrected by Henry Mosleywhen he formed the modern periodic table based on increasing atomic number.
Dmitri Mendeleev was particularly important why?
He is important because he was the person who invented the Periodic Table and made it how it is today
Who was maker on the periodic table?
The person known as the "maker" of the periodic table is Dmitri Mendeleev, a Russian chemist. He is credited with arranging the elements in a systematic way based on their atomic mass and properties, which formed the basis for the modern periodic table.
What is the name of the person who developed our modern periodic table?
Dmitri Mendeleev is credited with developing the modern periodic table in 1869. He arranged the elements based on their properties and atomic weights, predicting the properties of undiscovered elements.
How do you get the atomic mass and and atomic number?
it is simple. all you need to do is look in the periodic table the numbers above and under the letter.Atomic number is determined from the number of protons in the nucleus. Atomic mass is determined from the number of protons AND neutrons in the nucleus. Since elements have multiple isotopes with differing numbers of neutrons, the atomic mass reported on periodic charts is usually the average atomic mass. As the first person who answered this question pointed out, you can usually find the atomic number by looking for a number above the atomic symbol for the element in the the table (H for hydrogen, C for carbon, Fe for Iron, Au for gold, etc.). Sometimes the number will be below the symbol but in bold font. When the periodic table gives an atomic mass, it is usually given under the atomic symbol and is almost always some kind of decimal number that is always greater than the atomic number, for example: Carbon has an atomic number of 6and an atomic mass of 12.0107 amu.
Who discovered atomic number?
The concept of atomic number was proposed by Henry Moseley, a British physicist, in 1913. Moseley's research on X-ray spectra of elements led to the reorganization of the periodic table based on atomic number. His work established the modern understanding of the organization of elements by their atomic numbers.
What is the main contribution of Dmitri Mendeleev in modern chemistry?
He made the periodic table. When he found gaps he said there were unknown elements, he was right and those elements were found in his lifetime.Mendeleev was the first person to organize the elements into what we would recognize as a version of the modern periodic table.
Who is credited with an atomic number?
Ellucidating the explanatory power of atomic number, especially for chemistry, was the result of work by several people, including Mendeleev, Bohr, Rutherford, Moseley, van den Broek and Chadwick. You might be interested in the detail provided by the atomic number wikipedia article.
