Profile
Settings
Refer your friends
Sign out
Isotopes are two or more types of atoms with the same atomic number (number of protons in their nuclei) and periodic table position (and so belong to the same chemical element) but distinct nucleon numbers (mass numbers) due to differing numbers of neutrons in their nuclei. While all isotopes of the same element have nearly identical chemical properties, their atomic weights and physical attributes differ. Example of an isotope including Carbon has an atomic number of 6These isotopes have neutron counts of 6,7, and 8, respectively, because each carbon atom contains six protons.
Isotopes
Isotope has one of two different species of atoms of a chemical element with the same atomic number and location in the periodic table, but distinct atomic weights and physical properties. For each chemical element, there exist one or more isotopes.
An atom’s nucleus is identified and labelled by the number of protons in its nucleus. This atomic number is usually denoted by the letter Z . The significance of the atomic number stems from the fact that all atoms with the same atomic number have chemical properties that are substantially, if not exactly, identical. A sample of an element is a big group of atoms with the same atomic number. Every atomic number has one spot in the periodic table of the elements, and each of these locations is labelled with the element’s common name, such as calcium, radon, or uranium.
Examples Of Isotopes
Carbon 12 and 14are two isotopes of carbon, one with six neutrons and the other with eight (both with 6 protons). While carbon-12 is a radioactive isotope, carbon-14 is a stable isotope (radioisotope).
Uranium-235 and uranium-238 are both elements found naturally in the Earth’s crust. They both have a very lengthy half-life. As a byproduct of decay, uranium-234 is created.
Isotope Notation
- After the element’s name or symbol, write its mass number. Carbon-12, or C-12 is an isotope containing six protons and six neutrons, for example. Carbon-13or C-13 is an isotope with 6 protons and 7 neutrons. Even if two isotopes are different elements, their mass numbers may be the same. You might have carbon-14 and nitrogen-14, for example.
- An element symbol’s mass number can be seen in the upper left corner.
carbon isotopes
- Carbon atoms, which form the backbone of all organic molecules, can be used to identify these samples. The most common C atom on Earth is Carbon-12, Carbon-13, on the other hand, is found in a 1.1 percent abundance. Because this isotope has one extra neutron than Carbon-12, a carbon -13atom weighs approximately 1 amu more than a Carbon-12 atom. The isotope ratio of Carbon-12 to Carbon-13 in extraterrestrial sources is slightly higher (approximately 1.2 percent). When one considers how many carbon atoms are in a simple organic molecule, like the glycine retrieved from Stardust, this seemingly minor percentage variation becomes significant. Fortunately, the glycine sample’s isotopic ratio revealed an exceptionally high abundance of Carbon-13 atoms in the glycine structure, demonstrating that the biomolecule originated in space.
- A distinction in nucleic mass does not always reflect a distinction in chemical characteristics. Isotopes have the same amount of protons and, as a result, the same number of electrons. Because electrons identify ions and define chemical bonds, they are the most important participants in chemical reactions. Furthermore, an atom cannot simply gain or lose an arbitrary amount of neutrons, because some isotopes are extremely stable, while others decay in a fraction of a second. Another technique to establish a sample’s isotopic mass is to measure its rate of radioactive decay.
Carbon Isotopes 12, 13 14
Carbon isotopes 12,13, and 14 get more neutrons than some other carbon isotopes. Carbon 12 is made up of exactly six protons and six neutrons ( hence the 12 )Carbon 13 is made up of six protons and seven neutrons. Carbon 14 is made up of six protons and eight neutrons.
You might also claim that the difference between these isotopes is mass because molecular mass is derived by adding the number of protons and neutrons.
With such a half-life of 5700 years, carbon 14 is also a radioactive.
Conclusion
Atoms with the same number of protons but a varying number of neutrons are known as isotopes. Protium, Deuterium, and Tritium are three hydrogen isotopes. The atomic number of hydrogen is the same for all three isotopes. They differ in the number of neutrons in the nucleus because they have distinct mass numbers. Carbon atoms, which form the backbone of all organic molecules, can be used to identify these samples. Carbon 12 and 14are two isotopes of carbon, one with six neutrons and the other with eight (both with 6 protons). The number of protons in an atom’s nucleus is used to identify and label the atom. Example of an isotope including Carbon has an atomic number of 6, which means that each carbon atom has six protons, giving these isotopes neutron numbers of6,7 and 8, respectively.
