SATHEE: Classification of Elements and Periodicity in Properties

Classification of Elements and Periodicity in Properties - Result Question 20

####20. The correct order of the decreasing ionic radii among the following isoelectronic species are :

(a) $C a^{2 +} > K^{+} > S^{2 -} > C l^{-}$

(b) $C l^{-} > S^{2 -} > C a^{2 +} > K^{+}$

[2010]

(d) $K^{+} > C a^{2 +} > C l^{-} > S^{2 -}$

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Solution:

(c) Among the isoelectronic species, size increases with the increase in negative charge. Thus $S^{2 -}$ has the highest negative charge and hence largest in size followed by $C l^{-}, K^{+}$ and $C a^{2 +}$ .

Classification of Elements and Periodicity in Properties - Result Question 20

Solution:

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Classification of Elements and Periodicity in Properties - Result Question 20

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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