(a) Account for the following: (i) The acidic strength decreases in the order: `HCl > H_2S > PH_3` (ii)Tendency to

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Q 2646378273.     (a) Account for the following:
(i) The acidic strength decreases in the order:
`HCl > H_2S > PH_3`

(ii)Tendency to form pentahalides decreases down the group in group 15 of the periodic table.
(b) Complete the following chemical equations:

(i) `P_4 + SO_2 Cl_2 ->`
(ii) `XeF_2 + H_2O ->`
(iii) `I_2 + HNO_3 (conc.) (->)`
CBSE-12th 2011

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