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Number of protons PLUS number of valence electrons (plus - if needed - number of electrons in inner shell).

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Related Questions

Which fundamental property of the elements is the basis of modern periodic table?

Atomic number is the fundamental property. Elements are arranged in order of increasing atomic number.


What property is used to arrange element on the periodic table?

Atomic number on the basis of Modern periodic law as on the view of Henry Mosely


Who created or founded the periodic table?

Henry Moseley founded modern periodic table. He proved that atomic number is the fundamental property to arrange the elements.


How many elements are in the modern periodic table?

The Periodic Table has 118 elements and counting...


How many elements the modern periodic table contains approximately?

The modern periodic table contains approximately 118 elements.


How does the modern periodic arrange the elements?

The modern Periodic Table arranges elements based on properties. These properties include valence electrons of the elements and density for example.


What best describes the modern periodic table?

Periodic table of elements.


What did British scientist Henry Moseley determine?

British scientist Henry Moseley determined the concept of atomic number as the basis for the modern periodic table, demonstrating that it is a more fundamental property of an element than its atomic mass. He also used X-ray spectroscopy to accurately determine the atomic numbers of elements, which led to a more organized and predictive arrangement of the elements in the periodic table.


How are the elements in the modern periodic arranged?

The elements are ordered by their mass number.


How many elements are in included in the modern periodic table?

112 elements are known, with the existence of addition 6 elements being tentatively proposed.


Who gave the modern periodic table so?

The modern periodic table was created by Dmitri Mendeleev in 1869. He arranged the elements based on increasing atomic mass and similar chemical properties. Mendeleev's table provided a framework for organizing the known elements and predicting the properties of undiscovered elements.


What contribution did Moseley make to the development of the mondern periodic table?

Mosley arranged elements in order of increasing atomic number