Question

The correct order of the decreasing ionic radii among
the following is electronic species are

(1) Ca2+ > K > 52-> CH
(2) CH> S2- > Ca2+ > K
+
(3) S2-> CH-> K+ > Ca2+
(4) K* > Ca2+ > CH> S2-​

Answer 1

Answer:

right answer ( 3) ok ok ok