Answer: Writing Symbols for AtomsMagnesium has three
Chapter , Problem 2PE(choose chapter or problem)
Problem 2PE
Writing Symbols for Atoms
Magnesium has three isotopes with mass numbers 24, 25, and 26. (a) Write the complete chemical symbol (superscript and subscript) for each, (b) How many neutrons are in an atom of each isotope?
Give the complete chemical symbol for the atom that contains 82 protons, 82 electrons, and 126 neutrons.
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