Arrange the following in order of:
(a) Increasing oxidation no. of `Mn`:
`MnCl_(2),MnO_(2),Mn(OH)_(3),KMnO_(4)`
(b) Decreasing oxidation no.of. `I`:
`I_(2),HI,HIO_(4),ICI,IF_(3),IF_(5)`
(c) Increasing oxidation no. of `I`
`I_(2),HI,HIO_(4),ICl,IF_(3),IF_(5)`
(d) Increasing oxidation no.of. `N`:
`N_(2),NH_(3),N_(3)H,NH_(2)NH_(2),NH_(2)OH,KNO_(2),KNO_(3),N_(2)O`

Explanation

`{:((a),MnCl_(2),lt,Mn(OH)_(3),lt,MnO_(2),lt,KMnO_(4)),("ox. no. of Mn",+2,,+3,,+4,,+7):}`
`{:((b),HXO_(4),gt,HXO_(3),gt,HXO_(2),gt,HXO),("ox. no. of X",+7,,+5,,+3,,+1):}`
`{:(( c),HI,lt,I_(2),lt,ICl,lt,IF_(3),lt,IF_(5),lt,HIO_(4)),("ox. no. of I",-1,,0,,+1,,+3,,+5,,+7):}`
`{:((d),NH_(3),lt,N_(2)H_(4),lt,NH_(2)OH,lt,N_(3)H,lt,N_(2)),("ox. no. of N",-3,,-2,,-1,,-1//3,,0):}`