Implicit Hydrogens

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The Implicit Hydrogens property specifies whether additional, implicit hydrogen atoms may be attached to the selected atoms. If implicit hydrogen atoms are not allowed, all valences to that atom must be filled by bonds to non-hydrogen atoms. The implicit hydrogen options are described in the following table.

Option	Search Result
Allowed	Default. Finds compounds regardless of whether hydrogen atoms are attached to the selected atoms.
Not allowed	Finds compounds with no additional hydrogen atoms attached to the selected atoms.