Because relitive atomic masses are NEVER whole numbers.
The atomic number is always whole, atomic weight is not
The atomic nass is not always a whole number, but the atomic number is because its the number of protons and neutrons.
The question is based on a complete lack of understanding as to what the atomic number is! They are always, without exception, whole numbers.
No element has this atomic number. All atomic numbers are whole numbers.
The atomic numbers of an element is the average mass of all that element's isotopes. Some elements have A LOT of isotopes. Sometimes, that average isn't always a whole number.
The atomic number is the number of protons.
isotopes are elements of the atomic number but have different mass numbers.
Possibly yes, most are in decimal form but are rounded to the nearest whole number- then displayed on the periodic table. So the atomic numbers don't have to be whole Hope I helped
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.
Yes, atomic numbers will always be a whole number. The atomic number references the number of protons in the atom. Since there cannot be a in-between number of protons, the atomic number will have to be a whole number.
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.