[Answer] How can you tell isotopes apart?

Answer: Different weight

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How can you tell isotopes apart? Isotope vs. nuclide. A nuclide is a species of an atom with a specific number of protons and neutrons in the nucleus for example carbon-13 with 6 protons and 7 neutrons. The nuclide concept (referring to individual nuclear species) emphasizes nuclear properties over chemical properties whereas the isotope concept (grouping all atoms of each element) emphasizes chemical over nuclear. Immunoglobulin class switching also known as isotype switching isotypic commutation or class-switch recombination (CSR) is a biological mechanism that changes a B cell's production of immunoglobulin from one type to another such as from the isotype IgM to the isotype IgG. During this process the constant-region portion of the antibody heavy chain is changed but the variable region of the ... Thu Mar 02 2006 13:30:00 GMT-0500 (Eastern Standard Time) · Of the first 82 elements in the periodic table 80 have isotopes considered to be stable. The 83rd element bismuth was traditionally regarded as having the heaviest stable isotope bismuth-209 but in 2003 researchers in Orsay France measured the half-life of 209 Bi to be 1.9 × 10 19 years. Technetium and promethium (atomic numbers 43 and 61 respectively) and all the elements with an ... The isotope -ratio mass spectrometer (IRMS) allows the precise measurement of mixtures of naturally occurring isotopes . Most instruments used for precise determination of isotope ratios are of the magnetic sector type. This type of analyzer is superior to the quadrupole type in this field of research for two r...

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