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Most elements have isotopes---atoms that have the same number of protons (and hence they are still that element) but different numbers of neutrons. For instance, sulfur found in nature has four stable isotopes: S-32 16 protons 16 neutrons S-33 16 protons 17 neutrons S-34 16 protons 18 neutrons S-36 16 protons 20 neutrons Each of these isotopes has a different mass, but all are sulfur because they have 16 protons.
What else can I help you with?
What is the difference between isobar and isotope?
isobars are elements with same mass numbers (Atomic Mass) and different atomic number (number of proton or electron)
What guantities are always equal to an elements atomic number?
Mass
The atomic mass of the elements are not whole value numbers because of the existence of?
D. Protons
What are the atomic number and mass of the animals?
Animals are not atoms and have neither an atomic number nor an atomic mass.
What are the atomic mass of elements rarely whole numbers?
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.
What is the average of the mass numbers of an elements isotopes?
the Atomic Mass
What is the difference between isobar and isotope?
isobars are elements with same mass numbers (Atomic Mass) and different atomic number (number of proton or electron)
What guantities are always equal to an elements atomic number?
Mass
Can an atom of two different elements have the same mass number?
Yes. The mass number is basic to the different elements, even more useful than the atomic number. (Unless it is an isotope. Isotopes have a different amount of neutrons than the basic element atom which makes a difference in mass number too. So, a difference in mass numbers doesn't always mean it is a different element.)
Did Dmitri Mendeleev organize elements by atomic numbers or atomic mass?
At first, he did it by atomic mass, but that didn't quite work out right, so he changed it to atomic number.
How are atomic numbers and mass numbers of elements arranged in the periodic table?
by ectron protons and neutrons
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.
The atomic mass of the elements are not whole value numbers because of the existence of?
D. Protons
What are the atomic number and mass of the animals?
Animals are not atoms and have neither an atomic number nor an atomic mass.
Is your modern periodic table based on atomic mass or atomic number?
The modern periodic table is arranged according to the elements' atomic numbers.
Which of these is always equal to the molar mass of any element?
This is sum of the atomic weights of elements contained in the formula.
What is the atom with same atomic number but different mass number?
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
