No, all elements have so called isotopes, meaning that the number of neutrons in the nucleus differs from the most common isotope. Hydrogen, for example, has three known isotopes: 11H, 12H, 13H, where the first one is the most common. They solely in their number of neutrons, not protons. The last two isotopes are less stable, hence less common.
Each atom of an isotope of beryllium (or of another element) is different from the atoms of an other isotope. But all the atoms of an isotope are identical.
In any element, all atoms are identical in terms of their number of protons in the nucleus, which determines the element's identity. However, atoms of the same element can differ in the number of neutrons, resulting in isotopes.
Atoms are indivisible and indestructible, and all of the atoms of a given element are identical in mass.
These affirmations are not valid today:· All atoms of a given element are identical.· A given compound always has the same relative numbers of types of atoms.
John Dalton
Because the existence of isotopes was discovered not all atoms of an element are identical.
Dalton's atomic theory proposed that all atoms of a particular element are identical, which we now know is not entirely true. Isotopes are atoms of the same element with different numbers of neutrons, leading to variations in atomic mass. This discovery challenged Dalton's rule of identical atoms for a given element.
The number of protons is identical in all atoms of an element.
atoms are of an element are the same becasue the are all made from identical particles. there is no way to distinguish one electron from another electron. the same is true for neutrons and protons. so by virtue of the fact that its constituents are identical, all atoms of the same element are identical.
Each atom of an isotope of beryllium (or of another element) is different from the atoms of an other isotope. But all the atoms of an isotope are identical.
In any element, all atoms are identical in terms of their number of protons in the nucleus, which determines the element's identity. However, atoms of the same element can differ in the number of neutrons, resulting in isotopes.
Atoms are indivisible and indestructible, and all of the atoms of a given element are identical in mass.
Aluminium is a chemical element because all atoms are identical.
An element. The particules are atoms.
A substance in which all atoms are identical is called an element.
These affirmations are not valid today:· All atoms of a given element are identical.· A given compound always has the same relative numbers of types of atoms.
John Dalton