(a) Draw the structures of the following :

(i) H3PO2                                                          (ii) BrF3

(b) How would you account for the following observations :

(i) Phosphorus has a greater tendency for catenation than nitrogen.

(ii) Bond dissociation energy of fluorine is less than that of chlorine.

(iii) No chemical compound of helium is known.

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#7 | 17th Group

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group 17 ,preparation and properties
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