NEET Chemistry The s-Block Elements Questions Solved

NEET - 2009

In the case of alkali metals, the covalent character decreases in the order

(a) MCl>MI>MBr>MF

(b) MF>MCl>MBr>MI

(c) MF>MCl>MI>MBr

(d) MI>MBr>MCl>MF

Key Idea According to Fajan's rule,

 Covalent character  1/size of cation size of anion

In the given options, cation is same but anions are different. Among halogens the order of size is


... Order of covalent character is


Difficulty Level:

  • 8%
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  • 48%
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