Preferred Label : isoelectronic;
IUPAC definition : Two or more molecular entities are described as isoelectronic if they have the same
number of valence electrons and the same structure, i.e. number and connectivity of
atoms, but differ in some of the elements involved. Thus: CO, N sub 2 /sub and NO
sup class plus /sup are isoelectronic. CH sub 2 /sub C O and CH sub 2 /sub N
N are isoelectronic. div class chemoverlay pop pop1 img I03276-1.png CH sub 3 /sub
COCH sub 3 /sub /div and div class chemoverlay pop pop1 img I03276-2.png CH sub
3 /sub N NCH sub 3 /sub /div have the same number of electrons, but have different
structures, hence they are not described as isoelectronic.;
Origin ID : I03276;
See also
Two or more molecular entities are described as isoelectronic if they have the same
number of valence electrons and the same structure, i.e. number and connectivity of
atoms, but differ in some of the elements involved. Thus: CO, N sub 2 /sub and NO
sup class plus /sup are isoelectronic. CH sub 2 /sub C O and CH sub 2 /sub N
N are isoelectronic. div class chemoverlay pop pop1 img I03276-1.png CH sub 3 /sub
COCH sub 3 /sub /div and div class chemoverlay pop pop1 img I03276-2.png CH sub
3 /sub N NCH sub 3 /sub /div have the same number of electrons, but have different
structures, hence they are not described as isoelectronic.
