(a) Account for the following :

(i) The acidic strength decreases in the orderHCl>H2S>PH3

(ii) Tendency to form pentahalides decreases down the group in group 15 of the periodic table.

(b) Complete the following chemical equations :

(i) P4+SO2Cl2

(ii) XeF2+H2O

(iii) I2+HNO3conc 

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#7 | 17th Group

Concept Questions :-

group 17 ,preparation and properties
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