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Question
Chemistry
Which of following represents the correct order of covalent character among the iodides of alkali metals?
Q. Which of following represents the correct order of covalent character among the iodides of alkali metals?
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NTA Abhyas
NTA Abhyas 2022
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A
LiI > NaI > KI > RbI > CsI
B
NaI > KI > RbI > CaI > LiI
C
LiI > CsI > RbI > KI > NaI
D
CsI > RbI > KI > NaI > LiI
Solution:
Extent of polarization decreases with increasing in size of cation. Extent of polarization is maximum in LiI and minimum in CsI. Hence, LiI has maximum covalent character while CsI has minimum covalent character.
LiI > NaI > KI > RbI > CsI