`K^(+),Cl^(-),Mg^(2+),Sc^(3+)``K^(+),Ca^(2+),Sc^(3+),Cl^(-)``Na^(+),Ca^(2+),Sc^(3+),F``Na^(+),Mg^(2+),Al^(3+),Cl` Show
Answer : C Solution : Isoelectronic species are those which have same electrons. <br> `K^(+)=19-1=18, Ca^(+2)=20-2=18` <br> `Sc^(+3)=121-3=18, Cl^(-)=17+1=18` `K^(+) ,C1^(-) ,Mg^(2+) , Sc^(3+)``Na^(+) , Ca^(2+) , Sc^(3+) , F^(-)``K^(+) , Ca^(2+) , Sc^(3+) , C1^(-)``Na^(+) , Mg^(2+) ,A1^(3+) ,C1^(-)` Answer : C Solution : `K^(+) (19 - 1= 18 ) . C1^(-) (17 + 1= 18) .` <br> `Ca^(2+) (20- 2 =18) , Sc^(3+) (21 = 3=18)` represent a collection of isoelectronic species. Answer Verified Hint: Isoelectronic species have the same number of electrons. : In isoelectronic species, as the nuclear charge increases, the force of attraction by the nucleus on the electrons also increases. Complete answer: (b)- $N{{a}^{+}},C{{a}^{2+}}S{{c}^{3+}},{{F}^{-}}$ (c)- ${{K}^{+}},C{{l}^{-}},C{{a}^{2+}}S{{c}^{3+}}$ (d)- ${{K}^{+}},C{{a}^{2+}},S{{c}^{3+}},{{F}^{-}}$
Note: The nuclear charge is calculated by the number of electrons + charge on the ion. Uh-Oh! That’s all you get for now. We would love to personalise your learning journey. Sign Up to explore more. Sign Up or Login Skip for now Uh-Oh! That’s all you get for now. We would love to personalise your learning journey. Sign Up to explore more. Sign Up or Login Skip for now Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses No worries! We‘ve got your back. Try BYJU‘S free classes today! No worries! We‘ve got your back. Try BYJU‘S free classes today! No worries! We‘ve got your back. Try BYJU‘S free classes today! Solution The correct option is A K+,Cl−,Ca2+,Sc3+Isoelectronic species are those species which contains same number of electrons. (a) K+=19−1=18 e− Cl−=17+1=18 e− Ca2+=20−2=18 e− Sc3+=21−3=18 e− Thus, all the species are isoelectronic. (b) Ba2+=56−2=54 e− Sr2+=38−2=36 e− K+=19−1=18e− S2−=16+2=18e− Thus, these species are not isoelectronic. (c) N3−=7+3=10e− O2−=8+2=10e− F−=9+1=10 e− S2−=16+2=18 e− Thus, these species are not isoeletronic. (d) Li+=3−1=2 e− Na+=11−1=10 e− Mg2+=12−2=10 e− Ca2+=20−2=18 e− Thus, these species are not isoeletronic.Which set of species represents isoelectronic species?Iso electronic species are elements having same number of electrons. Thus this set represents isoelectronic species.
What are examples of isoelectronic ions?Atoms and ions that have the same electron configuration are said to be isoelectronic. Examples of isoelectronic species are N3–, O2–, F–, Ne, Na+, Mg2+, and Al3+ (1s22s22p6).
Which pair is of isoelectronic species K+ Cl Na+?the atomic number of Cl is 17. So the number of electrons with Cl- is 18. Hence K+ and Cl- are isoelectronic.
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