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question mark

the iso electronic ion having lowest ionisation energy is :
i> S2-
ii> Ca2+
iii> K+
iv> Cl-

Jasmeey kaur , 7 Years ago
Grade 12
anser 1 Answers
Chidi Kester
All have 18 electrons but Calcium has the highest atomic number and so it`ll have the largest size making electron removal easier. Ca2+ is the lowest
Last Activity: 7 Years ago
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