Classification Of Elements And Periodicity In Properties
- Classification Of Elements And Periodicity In Properties Ques 1
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Classification Of Elements And Periodicity In Properties Ques 35
35. $Na^{+}, Mg^{+}, Al^{3+}$ and $Si^{4+}$ are isoelectronic. The order of their ionic size is
[1993]
(a) $Na^{+}>Mg^{++}<Al^{3+}<Si^{4+}$
(b) $Na^{+}<Mg^{++}>Al^{3+}>Si^{4+}$
(c) $Na^{+}>Mg^{++}>Al^{3+}>Si^{4+}$
(d) $Na^{+}<Mg^{++}>Al^{3+}<Si^{4+}$
Show Answer
Answer:
Correct Answer: 35.(c)
Solution:
(c) Amongst isoelectronic ions, the size of the cation decreases as the magnitude of the charge increases.





