Question

write any five pair of isoelectronic?​

Answer 1

Answer:

Isoelectronic species are elements or ions that have the same, or equal number of electrons. 

A. ) Cl2O=2×17+8=42 electrons

      ICl2−=53+2×17+1=88 electrons

B. ) Cl2−=2×17+1=35 electrons

      IF2+=53+2×9−1=70 electrons

C. ) ClO2=17+2×8=33 electrons

       ClO2−=17+2×8+1=34 electrons

D. ) ClF2+=17+2×9−1=34 electrons

       ClO2− and ClF2+ contain 34 electrons.

Hence option D contains the same number of electrons. Therefore, they are isoelectronic.