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Why the stability of following metal chloride follows the order LiCl>KCl>NaCl>CsCl Please explain in detail.

Why the stability of following metal chloride follows the order


LiCl>KCl>NaCl>CsCl


Please explain in detail.

Grade:12th Pass

1 Answers

ruchi yadav
askIITians Faculty 27 Points
8 years ago
Electronegativity of Lithium (Li) is 1.0,Sodium (Na) is 0.9,Potassium(K) is 0.8,Casium (Cs) is 0.7 and Chlorine is 3.0.

Note -Electronegativity increases from LEFT to RIGHT in Periodic Table and decreases from TOP to BOTTOM.....

If difference between electronegativities of two elements are more then they are more unstable....and if less they are more stable.

1.Difference between Cs and Cl is 2.3 so Most Unstable.
2.Difference between K and Cl is 2.2 so more stable than CsCl.
3.Difference between Na and Cl is 2.1 so more stable than KCl.
4.Difference between Li and Cl is 2 so most stable among Four.

and then it is---LiCl>NaCl>KCl>CsCl.


Thank You
Ruchi
Askiitians Faculty

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