Which of the following is the correct or...

Which of the following is the correct order of strength of necleophiles in polar aprotic solvents

`C_(2)H_(5)bar(O) gt bar(O)H`

`(CH_(3))_(3)Cbar(O) lt CH_(3)bar(O)`

`CH_(3)bar(O) gt bar(O)H`

`RCObar(O) gt RCOOH`

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The correct Answer is:

A, B, C, D

Nucleophlicity

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Which of the following is the correct order of density ?

`Li gtNa`

`K gt Rb`

`Rb gt Cs`

`Nagt K`

`I gt Br gt F gt Cl`

`F lt Cl lt Br lt I`

`F gt Cl gt Br gt I`

`I lt Br lt F lt Cl`

`I gt Br gt F gt Cl`

`F lt Cl lt Br lt I`

`F gt Cl gt Br gt I`

`I lt Br lt F lt CI`