How to write an Isotope in Google Docs? I know. - reddit.
Isotopic definition, any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive isotopes, and every element has known isotopic forms.
An isotope that is radioactive is called a radioisotope or radionuclide. Two examples may help clarify this. The most stable isotope of uranium, U-238, has an atomic number of 92 (protons) and an atomic weight of 238 (92 protons plus 146 neutrons). The isotope of uranium of greatest importance in atomic bombs, U-235, though, has three fewer.
You can tell the difference between isotopes by finding how many neutrons they have. To identify a specific isotope of an element, write the name of the element followed by a hyphen and the mass number of the isotope. You can find the number of neutrons in an element by using the following equation.
Although isotopes have the same chemical properties, they do not have the same physical properties. Because the number of neutrons is different, the mass number is different. Isotopes are written in two different ways. They can be written using their symbol with the mass number (to the upper left) and atomic number (to the lower left) or the isotope name is written with a dash and the mass.
The other way is to write out the element and write the mass after a dash next to the element's name: helium-4; carbon-14; uranium-238; Hydrogen Hydrogen is the only element where the isotopes are given specific names. Common hydrogen, which has zero neutrons, is called protium. Hydrogen with one neutron is called deuterium and hydrogen with.
But we do need a way to refer to one particular isotope of an element, and we can do this in a number of different ways. Remembering that the atomic number (Z) is the same for all atoms of an element regardless of the number of neutrons in the nucleus of an atom, then each isotope of hydrogen can be distinguished from the others using just the name of the element, hydrogen, AND its mass number.
Nuclear Notation. Standard nuclear notation shows the chemical symbol, the mass number and the atomic number of the isotope. Example: the isotopes of carbon. The element is determined by the atomic number 6. Carbon-12 is the common isotope, with carbon-13 as another stable isotope which makes up about 1%. Carbon 14 is radioactive and the basis for carbon dating. The mass of an element that is.