Isotopes include two or more versions of an atom of a given element that have the same number of protons but a different number of neutrons. An isotope symbol communicates information about the element (specifically, the symbol), the atomic number of that element, and the mass number of the specific isotope of the atom.
Isotopes - Questions 11 Help
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There are three similar versions of this question. Here is one of those versions:
Version 1:
An isotope has an atomic number of 51 and contains 70 neutrons. Construct the symbol for the isotope.
Activity 2 - Isotope Symbols I - is all about constructing the isotope symbol from information about the atom. Refer to the Fundamentals section (above) to acquire the basic information. Then study the graphic below and the information that follows.
You will have to make use of the periodic table to associate the element name with the atomic number.