23CH3- > NH2- >OH- > F-
EDITED
Is it correct ??
Arrenge the fllowing ions in correct order of decreasing nucleophilicity in non polar solvent
OH- ,NH2- ,F- ,CH3-
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12 Answers
11Yes, Qwerty u r correct
From , c → N → O → F
Electronegativity inc and basic strength dec.
11electro-vity and basicity follow the same order when the given species have the same electronegative atom ... so tuShar what u said is not always true....
whats the answer swaraj?
23hmm...
i m confused abt O > F ......
so nucleophilicity of O > all halogen ions in non polar solvents right ?
39In non polar solvents the salt does not dissolve into solvated cation and anion. It exists as an intimate ion pair. Ion pairing is stronger when size of ions is smaller. F has the smallest size, so naturally it is the worst nucleophile in non polar solvents.
Had it been a polar solvent, oxygen would attract polarised solvent molecules and find it tough to rip through them to be a good nucleophile, likewise nitrogen. So the nucleophilicity order would be
N > O due to greater electronegativity of O.
Edit : Just rechecked the concept. N > O in non polar solvent as well.