“+ adjective
Etymology: International Scientific Vocabulary is- + electronic
1. : having the same number of electrons
the fluoride ion, the neon atom, and the sodium ion are isoelectronic
— used of atoms or their ions
2. : having the same number of valency electrons
the carbon dioxide molecule and the cyanate ion are isoelectronic
— used of molecules or radicals or ions composed of two or more atoms
• iso·electronically “+ adverb