JEE Main Solved Paper 2017 Question 30
Question: The group having isoelectronic species is :- [JEE Main Solved Paper-2017]
Options:
A) $ {O^{2-}},{F^{-}},N{a^{+}},M{g^{2+}} $
B) $ {O^{-}},{F^{-}},Na,M{g^{+}} $
C) $ {O^{2-}},{F^{-}},Na,M{g^{2+}} $
D) $ {O^{-}},{F^{-}},N{a^{+}},M{g^{2+}} $
Show Answer
Answer:
Correct Answer: A
Solution:
- $ \begin{aligned} & ions{O^{-2}}{F^{-}},N{a^{+}},M{g^{+2}} \\ & Atomic,number,=,89,1112 \\ & No\text{.},of,{e^{-}}=10,1010,10 \\ \end{aligned} $ therefore $ {O^{2-}},{F^{-}},N{a^{+}},M{g^{+2}} $ are isoelectronic
