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Why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers.?
Wiki User
∙ 6y ago
Why are atomic masses of elements not generally whole numbers? The atomic masses listed on the periodic table are a weighted AVERAGE of an element'sisotopes. ... An element's atomic number is the number of protons in its nucleus. Number of protons specifies atom type.
Wiki User
∙ 6y ago
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Elements are listed in the periodic table based on what?
Atomic Number
Why the relative atomic numbers of some elements are not shown in the periodic table?
All known elements are listed on the periodic table of the elements. Historical tables did not have elements listed that were unknown at the time. For instance, Dimitri Mendeleev, who laid out the first successful periodic table in 1869, did not have any of the noble gases listed since none of them had been discovered at that time. Modern periodic tables have gaps at the lower right end where elements are expected to be created in labs in the future, but have not been successfully created yet.
How are elements on the periodic table listed?
by their composition, (i.e. metal, non-metal, etc.) their re-activity, and the number of protons and neutrons
What information is listed in an elements square on the periodic table?
Element name is listed in the center.Element atomic number on the top left.Element atomic mass on bottom left.
The ion that is listed 15 on the periodic table of elements?
Phosphorus (P) has the atomic number 15.
What role does the atomic number play in the periodic table of elements?
elements are listed in the periodic table in order of increasing atomic number
What order are elements listed on the periodic table?
Atomic number and atomic mass
Elements are listed in the periodic table based on what?
Atomic Number
In the periodic table the elements are arranged in order of increasing?
In modern periodic table, elements are listed by increasing atomic number.
Why the relative atomic numbers of some elements are not shown in the periodic table?
All known elements are listed on the periodic table of the elements. Historical tables did not have elements listed that were unknown at the time. For instance, Dimitri Mendeleev, who laid out the first successful periodic table in 1869, did not have any of the noble gases listed since none of them had been discovered at that time. Modern periodic tables have gaps at the lower right end where elements are expected to be created in labs in the future, but have not been successfully created yet.
How are elements on the periodic table listed?
by their composition, (i.e. metal, non-metal, etc.) their re-activity, and the number of protons and neutrons
What does the periodic table list elements according to?
The elements are listed in ascending order, according to their atomic number. The periodic table is arranged in such a way that elements in the same column tend to have similar properties.
Why is elements atomic mass not listed in periodic table?
it is< go to ptable.com! it will help you alot (:
Can atomic number be found on the periodic table?
The atomic number is the number located in the upper left corner of the element on the periodic table. Elements are listed in order of increasing atomic number.
What information is listed in an elements square on the periodic table?
Element name is listed in the center.Element atomic number on the top left.Element atomic mass on bottom left.
How are elements listed on the periodic tabel?
They are organized by atomic number (the number of protons/electrons in the element).
Who listed the elements in a table accourding to their atomic masses?
Mandeleev who predicted periodic table.
