Isotopes are atoms (as regular as any!) which differ in number of neutrons in the nucleus. For example, hydrogen isotopes are:
Isotope
When an atom of an element has a different number of neutrons.
An atom with a different number of neutrons is called an isotope of the original element. Isotopes have the same number of protons (and thus the same element) but different numbers of neutrons.
an isotope is defined by an atom with the same number of protons, but a different number of neutrons
When an atom is of the same atomic number, atomic mass, etc. to the one on the periodic table (Lets use Boron for example) Then B is the regular atom. But if you change the number of neutrons (from 6-to-7 or whatever number) ; because the number of protons never changes; you will get a different atomic mass, so an isotope is the atom with a different atomic mass. You write an isotope atom with the elements symbol and to the left of it you script (In the top left corner really small like an exponent) the new atomic mass. So in this case B would now be 12B
An isotope will have the same number of protons, but a different number of neutrons than a given atom.
Isotope
When an atom of an element has a different number of neutrons.
Isotopes aren't mutually exclusive of an atom - that is, you don't have to be one or the other (in fact, it is both). An isotope of an atom is an atom that has an unusual atomic weight, usually caused by having a non-regular amount of neutrons (they don't change the charge, so you can shove as many in an atom as you want, within limits).
An atom with a different number of neutrons is called an isotope of the original element. Isotopes have the same number of protons (and thus the same element) but different numbers of neutrons.
an isotope is defined by an atom with the same number of protons, but a different number of neutrons
Isotope
An element is a class of substances An atom is the smallest possible piece of an element. An isotope is an electrically charged atom.
an isotope.
When an atom is of the same atomic number, atomic mass, etc. to the one on the periodic table (Lets use Boron for example) Then B is the regular atom. But if you change the number of neutrons (from 6-to-7 or whatever number) ; because the number of protons never changes; you will get a different atomic mass, so an isotope is the atom with a different atomic mass. You write an isotope atom with the elements symbol and to the left of it you script (In the top left corner really small like an exponent) the new atomic mass. So in this case B would now be 12B
An isotope is where an atom has a different number of neutrons than what it should be.e.g.Gold has 79 protons and 118 neutrons = 197 nucleons.But some gold atoms are strange they only have 117 neutrons.They are isotopes.
An isotope.