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NCERT Class XII Chemistry
Chapter - The p-Block Elements
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Question : 36 of 74
Marks: +1, -0
Arrange the following in the order of property indicated for each set :
(i) F2,Cl2,Br2,I2F_2, Cl_2, Br_2, I_2 – increasing bond dissociation enthalpy.
(ii) HF,HCl,HBr,HIHF, HCl, HBr, HI – increasing acid strength.
(iii) NH3,PH3,AsH3,SbH3,BiH3NH_3, PH_3, AsH_3, SbH_3, BiH_3 – increasing base strength.
Solution:  
(i) I2<Br2<F2<Cl2I_2 < Br_2 < F_2 < Cl_2
(ii) HF<HCl<HBr<HIHF < HCl < HBr < HI
(iii)NH3>PH3>AsH3NH_3 > PH_3 > AsH_3 >SbH3>BiH3> SbH_3 > BiH_3
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