AIEEE 2004 Chemistry Solved Paper
© examsiri.com
Question : 7 of 75
Marks:
+1,
-0
Which one of the following sets of ions represents the collection of isoelectronic species?
(Atomic nos. : F = 9 , Cl = 17 , Na = 11 , Mg = 12 , Al = 13 , K = 19 , Ca = 20 , Sc = 21
[AIEEE 2004]
Go to Question: