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Did Mendeleev organize the elements by atomic mass or atomic number?
Mendeleev arranged elements in order of increasing mass. Later modern periodic table was discovered that contains elements arranged by atomic number.
What is the difference between the Mendeleev and Mosley periodic laws?
Mendeleev's periodic law, formulated in the 19th century, states that the properties of elements are a periodic function of their atomic mass, leading to the arrangement of elements in his periodic table based on increasing atomic mass. In contrast, Moseley's periodic law, established in the early 20th century, revised this idea by asserting that the properties of elements are better correlated with their atomic number rather than atomic mass. This shift corrected inconsistencies in Mendeleev's table and laid the foundation for the modern periodic table, where elements are arranged by increasing atomic number.
What did mendeleev's ordering actually correspond to?
Atomic mass. The modern table is based on atomic number.
Why was mendeleev's periodic table valid at all?
His table was sorted by atomic mass, not atomic number. (the way today's periodic table is sorted) Mendeleev was almost right, but they did not know about protons at the time. (atomic number is the number of protons in an element) There would have been absolutely no way of him figuring out they were related to atomic number if he didn't even know about atomic number
What particle contributes to the atomic number?
Number of protons are taken. They are arranged by number of protons. Mendeleev arranged elements first according to atomic number
What is the atomic number and how is it used to distiguinsh?
The atomic number is equal to the number of protons in an atomic nucleus; the atomic number is the order number of a chemical element in the periodic table of Mendeleev.
Did Mendeleev organize the elements by atomic mass or atomic number?
Mendeleev arranged elements in order of increasing mass. Later modern periodic table was discovered that contains elements arranged by atomic number.
What is the difference between the Mendeleev and Mosley periodic laws?
Mendeleev's periodic law, formulated in the 19th century, states that the properties of elements are a periodic function of their atomic mass, leading to the arrangement of elements in his periodic table based on increasing atomic mass. In contrast, Moseley's periodic law, established in the early 20th century, revised this idea by asserting that the properties of elements are better correlated with their atomic number rather than atomic mass. This shift corrected inconsistencies in Mendeleev's table and laid the foundation for the modern periodic table, where elements are arranged by increasing atomic number.
Who arranged the periodic table in accordance to atomic number?
Mendeleev
What do you mean by atomic number?
Atomic number = Number of protons = Number of electrons (in the neutral state) Also the atomic number is number of a chemical element in the periodic table of Mendeleev.
Which was NOT used by Mendeleev to organize his periodic table?
Atomic number was not used by Mendeleev to organize his periodic table. He organized the elements based on their atomic mass and properties, leaving gaps for undiscovered elements that were later filled.
What did mendeleev's ordering actually correspond to?
Atomic mass. The modern table is based on atomic number.
What contributes to the atomic number?
Number of protons are taken. They are arranged by number of protons. Mendeleev arranged elements first according to atomic number
An element atomic number is the what?
Atomic number = number of protons = number of electrons (in the neutral state) Also the atomic number is the number of the position of a chemical element in the periodic table of Mendeleev.
Who presented the periodic table according to atomic number?
Dmitri Mendeleev
What do you do with an atomic number and an atomic mass?
The atomic number is the number of a chemical element in the periodic table of Mendeleev; the atomic number is equal to the number of protons and electrons. The atomic mass is the mass of an atom expressed in relative atomic mass units.
What is the Name of scientist who sorted the elements into order?
In 1913, almost fifty years after Mendeleev, Henry Moseley published the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the wavelengths of the X-ray emissions of the elements coincided with the ordering of the elements by atomic number. With the discovery of isotopes of the elements, it became apparent that atomic weight was not the significant player in the periodic law as Mendeleev, Meyers and others had proposed, but rather, the properties of the elements varied periodically with atomic number. When atoms were arranged according to increasing atomic number, the few problems with Mendeleev's periodic table had disappeared. Because of Moseley's work, the modern periodic table is based on the atomic numbers of the elements.
