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.
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.
D. Protons
Elements exist as isotopes in nature. So their atomic weight is not a whole number.
Atomic numbers represent the number of protons in an atom's nucleus, which are always whole numbers because protons are indivisible particles. Atomic numbers cannot be fractions or decimal numbers because they refer to a count of discrete, whole particles.
Few elements have isotopes. their atomic mass is not a whole number.
Elements also possess isotopes. So their average atomic mass is rarely whole number.
because of its no. in table of elements
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 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.
Because the masses of protons, neutrons and electrons are not whole numbers.
The atomic masses of most elements are not whole numbers because they take into account the average mass of all the isotopes of that element, which have different masses due to varying numbers of neutrons. This results in a weighted average that is not a whole number.
D. Protons
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.
No element has this atomic number. All atomic numbers are whole numbers.
Elements exist as isotopes in nature. So their atomic weight is not a whole number.
Very rarely. Square roots are only whole numbers for perfect squares.
Because relitive atomic masses are NEVER whole numbers.