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Select the species which is best described to the right (a) `CI_(2),Br_(2),I_(2)` (has the lowest boiing point) (b) `CI,Ar,K` (has the smallest `IE`) (c ) `CH_(4), NH_(3),HF` (has the highest boiling point) (d) `CO_(2),NH_(3),CO` (has zero dipole moment) (e) `HOI,HOBr,HOCI` (is the weakest acid) . |
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Answer» `CI_(2)` has the fewest electrons, therefore least van der Waals forces (b) `K` is metal, thus smallest `IE` ( c) `HF` has H-bonding the largest intermolecular force (d) `CO_(2)` polar but `CO_(2)` is linear, and the bond moments cancel (e) In `HOI,I` is least `EN` it pulls electrons least leaving a greater fraction of the `O` electrons to bond with the `H` atom . |
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