What Makes A Good Nucleophile? (1)

What makes a good nucleophile? Two key factors (of 4) are covered here. The conjugate base is always a better nucleophile, and nucleophilicity increases as you go to the left along the periodic table.
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im half way through the semester, more than half way through the chapter and I finally have an explanation for nucleophiles. THANK YOU SO MUCH

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[@devdattabiswas5264]

So, in short...
1) The conjugate base of the given species (subtract 1 H) is the better nucleophile.
2) L to R electronegativity increases but Nucleophilicity decreases.

[@tarunKumar-ux9ez]

Thanks sir

[@guktefngrshoo7465]

5:30 is wrong. Oxygen has 3 bonds and 1 lone pair. 3+2=5. O should have 6 6-5 is +1 formal charge

[@jonasgustafsson5453]

The author has written a C in the methylate ion so it looks like an O. Formal charge -1 for carbon should be correct...

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[@06rmrz]

if higher electron density (more electrons tot give away) makes a good nucleophile, then why is fluorine the least nucleophilic in the second factor? was following along till that, now I/m confused. what factor do we look for then because both factors contradict each other.

[@mariangelvarela1458]

because flourine is most electronegative so it does not want to five up its electrons. (i realize this was asked a long time ago. just thought you might still want an answer lol )

[@DevashishGupta132435LC]

Subscribed

[@sandyhills4967]

I believe the OH3 should have a positive charge not a negative charge. Correct me if im wrong. Also does that mean its not a nucleophile since it has a positive charge?

[@MasterOrganicChem]

That's actually (-)CH3. Badly drawn. Thanks

[@sandyhills4967]

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[@bloober27]

Does nucleophilicity increase or decrease down a group (eg. F- vs I-)?

[@JonathanMartinez-og6mq]

I think since from the Left to Right is decreases then we can assume that down to up is the same, so nucleophilicity increases down so F- is less nucleophlic to I-

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