Whichof the followingsetsrepresents a collectionof isoelectronicspecie

1.	Whichof the followingsetsrepresents a collectionof isoelectronicspecies? (Atnos. Cs = 55,Br= 35)
Answer» `CA^(2+) , Cs^(+) Br` `Na^(+) Ca^(2+) , Mg^(2+)` `N^(3-) , F^(-), Na^(+)` `Be, A1^(3+) CI^(-)` SOLUTION :NA

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