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1. First cause: the atomic weight is the sum of the weights of protons, neutrons ans electrons.; they don't have masses as integers.
2. Second cause: also occurs the so-called mass defect.
Not Atomic Mass for elements; atomic weight is correct.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoThe average atomic weight of chemical elements (this is the correct term) is calculated from the atomic masses (this is the correct term for isotopes) of isotopes and the percentage of these isotopes; also atoms contain protons, neutrons and electrons and these particles has not a mass as an integer.
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Why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers.?
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.
The atomic mass of the elements are not whole value numbers because of the existence of?
D. Protons
Why is the atomic mass of nobelium a whole number?
For elements with no stable isotopes (like Nobelium), the mass number of the isotope with the longest half-life is used. Mass numbers are whole numbers.
Why don't the elements on the periodic table have a whole number as their atomic weight?
Elements exist as isotopes in nature. So their atomic weight is not a whole number.
What is an element's atomic mass not listed as a whole number on the periodic table?
Few elements have isotopes. their atomic mass is not a whole number.
Why the mass numbers on the periodic table of elements are rarely whole numbers?
Elements also possess isotopes. So their average atomic mass is rarely whole number.
Why aren't atomic masses of elements not whole numbers?
because of its no. in table of elements
Why are the elements 94 through 110 in the periodic table whole numbers?
1. All the atomic numbers are whole numbers. 2. If you think to atomic weight of heavy radioactive elements (atomic numbers from 93 to 118) is a rule of IUPAC to indicate in square parenthesis, [], the atomic mass of the most stable or known isotope.
Why the atomic mass numbers listed for elements on the Periodic Table are not whole numbers.?
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.
Why don27t elements in the periodic table have whole numbers for their atomic masses?
Because the masses of protons, neutrons and electrons are not whole numbers.
The atomic mass of the elements are not whole value numbers because of the existence of?
D. Protons
Why is the atomic mass of nobelium a whole number?
For elements with no stable isotopes (like Nobelium), the mass number of the isotope with the longest half-life is used. Mass numbers are whole numbers.
What element has the atomic number for 3.14?
No element has this atomic number. All atomic numbers are whole numbers.
How do isotopes differ and why is the atomic number of elements not a whole number?
Isotopes differ from each other by having different numbers of neutrons but the same number of protons since they are only the same element if they have the same number of protons. Atomic numbers aren't whole because their mass is based of the mass of hydrogen and amu's (atomic mass units) and due to how elements are formed, minute amounts of mass are lost in order to form the nuclear bonds resulting in not whole numbers.
Why don't the elements on the periodic table have a whole number as their atomic weight?
Elements exist as isotopes in nature. So their atomic weight is not a whole number.
What is an element's atomic mass not listed as a whole number on the periodic table?
Few elements have isotopes. their atomic mass is not a whole number.
Is square root are whole numbers?
Very rarely. Square roots are only whole numbers for perfect squares.
