Isotopes and Elements

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By default, ChemDraw correctly recognizes all isotopes in the full Table of the Elements. This data is provided by CRC Press, Inc. Isotopes are defined in the Isotopes Table file. You can edit this file to add new isotopes in any text editor.

	A superscripted number before the element symbol indicates isotope numbers.
	Isotopes can be included anywhere that regular elements can.
	Deuterium and Tritium can be indicated by their one-letter symbols.