1.

Decreasingorder of nucleophilicity is-

Answer»

`OH^(Theta)gtNH_(2)^(Theta)gtCH_(3)O^(Theta)gtRNH_(2)`
`NH_(2)^(Theta)gtOH^(Theta)gtCH_(3)O^(Theta)gtRNH_(2)`
`NH_(2)^(Theta)gtCH_(3)O^(Theta)gtRNH_(2)`
`CH_(3)O^(Theta)gtNH_(2)^(Theta)gtOH^(Theta)gtRNH_(2)`

SOLUTION :If the nucleophilic atoms are in the same ROW of the periodic table, nucleophilicity is approximately in ORDER of basicity. So, the order is-
`NH_(2)^(Theta)gtCH_(3)O^(Theta)gtOH^(Theta)gtRNH_(2)`


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