all atoms of the same element have the same

This number of protons is called the atomic number. Atoms of an element with the same mass number make up an isotope of the element. The atoms of different isotopes are atoms of the same chemical element they differ in the number of neutrons in the nucleus.Īll atoms of a chemical element have the same atomic number (number of protons in the nucleus) but may have different mass numbers (from having different numbers of neutrons in the nucleus).

Isotopes are atoms with different atomic masses which have the same atomic number. What are the masses of atoms from the same element? Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers. Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). How different atoms of the same element could have different atomic mass? 7 Who said atoms of different elements have different masses?.6 Is the mass of an atom equal to its mass?.5 How are atoms of the same element the same?.4 Why do elements have different masses?.2 What are the masses of atoms from the same element?.1 How different atoms of the same element could have different atomic mass?.

All atoms of the same element have the same