They are called isotopes and the difference between different isotopes of one type of element is the amount of neutrons each have.
Think you are looking for isotopes. Isotopes are atoms of the same element that have a different number of neutrons.
I think you may be referring to isotopes. These are atoms of an element with a differing number of neutrons in the nucleus, e.g 12 C and 14 C.
ion
It's still an atom. It would be a different isotope of the same element.
Isotopes of elements have different atomic mass'.
Atomic number and it also tells the number of protons and electrons in an atom it is on top of the element symbol.
The number of protons in the nucleus of an atom will determine its chemical identity. Only that. The number of neutrons can vary a bit, depending on the element, and we call these variations isotopes of that element. Electron count will match proton count only in a neutral atom. Rememeber that atoms loan out and borrow electrons, which is what chemistry is all about.
ion
An element.
You call a substance with only one type of atom, an element.
An atom of a different element.
element
It's still an atom. It would be a different isotope of the same element.
an isotope
isotopes
By definition, an Element contains only one kind of atom - atoms of that element. If it has more than one kind, it is a compound, not an element.
An element.
The element Hydrogen
it is unstable and decays to another element