Question

(a) Arrange alkyl halides water and alkane in order of decreasing density .
(b) Arrange chloromethanes and water in order of decreasing density.
(c) Arrange MeX in order of decreasing bond length.
(d) Arrange MeX in order of decreasing bond strength.
(e) Arrange MeX in order of activity.
(f) Arrange alkyl halides `(1^(@),2^(@),3^(@))` in order of decreasing `S_(N^(2))` reactivity.
(g) Arrange the order of reactivity of alcohols towards HX.
(h) Arrange the decreasing order of reactivity in haloforms.
(i) Arrange the following isomeric bromides in order of decreasing reactivity in `S_(N^(2))` displacement:

`underset((I))("(b) 2-Bromo-2- methylbutane") ,underset((II))(1-"Bromopentane")`,
`underset((III))(2-"Bromopentane")`
`(C) underset((I))(1-"Bromo-3-methylbutane") ,underset((II))(2-"Bromo-2-methylbutane")`
`underset((III))(2-"Bromo-3-methylbutane")`
`(d) underset((I))(1-"Bromobutane") , underset((II))(1-"Bromo-2- methylbutane")`
`underset(III)(1-"Bromo -3- methylbutane")`
`underset((IV))(1-"Bromo-2,2-dimethylpropane")`

Answer 1

`(a) RI gt RBr gt H_(2)O gt RCI gt RF gt RH`
`(b) C CI_(4) gt CHCI_(3) gt CH_(2)CI_(2) gt H_(2)O gt CH_(3)CI`
`(C) MeI gt MeBr gt MeCI gt MeF`
`(d) MeF gt MeCI gt MeBr gt MeI`
`(E) MeI gt MeBr gt MeCI gt MeF`
`(f) MeX gt RCH_(2) -X gt R_(2)CH -X gt R_(3)C -X`
`(g) Allyl, benzyl gt 3^(@) gt 2^(@) gt 1^(@)`
`(h) CHI_(3) gt CHBr_(3) gt CHCI_(3) gt CH_(3) F`
`(i) (a) I gt IV gt III gt II " "(b)II gt III gt I`
(C) `I gt III gt II" "(d) I gt III gt II gt IV`