Arrange the following in increasing order of bond angle around the central atom and explain: `BeF_(2),BF_(3),NH_(3),H_(2)O,CH_(4)`.

Arrange the following in decreasing order of their bond angle ': H_2 O, NH_3, H_2 S'

Arrange the following molecules in increasing order of number of lone pair of electrons. H_(2)O,PCl_(3),H_(2)O,BF_(3)

(a) Arrange the following in the increasing order of boiling points: C_(2)H_(5)NH_(2) , C_(2)H_(5)OH , (CH_(3))_(3)N (b) Arrange the following in increasing order of base strength in gas phase: (C_(2)H_(5))_(3)N , C_(2)H_(5)NH_(2) , (C_(2)H_(5))_(2)2NH (c) Arrange the following in decreasing order of solubility in water: (CH_(3))_(3)N , (CH_(3))_(2)NH , CH_(3)NH_(2)

(a) Arrange the following compounds in an increasing order of basic strengths in their aqueous solutions: NH_(3), CH_(3)NH_(2), (CH_(3)) _(2)NH, (CH_(3)) _(3)N . (b) Complete the following reaction equations: (i) RCONH_(2) underset(H_(2)O)overset(LAH)(to) (ii) C_(6)H_(5)N_(2)Cl + H_(3)PO_(2) + H_(2)O to (iii) C_(6)H_(5)NH_(2) + Br_(2) (aq) to

Arrange the following in the increasing order of their basic strength in aqueous solutions: CH_(3)NH_(2), (CH_(3))_(3)N, (CH_(3))_(2)NH