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Jasmine
Jasmine
04:29
@YuvrajSingh... The paper was not similar to previous year
Yuvraj Singh...
Yuvraj Singh...
04:46
@Jasmine what kind of score you are expecting?
Jasmine
Jasmine
@YuvrajSingh... not great
Yuvraj Singh...
Yuvraj Singh...
@Jasmine still?
@Jasmine OK,
It is OK if the score was wasn't, t that you are expecting, but analyze yourself and paper which you were giving, wether you scored 250 or 150 be smart and think what kind of blank which you need to fill in the next attempt. All the best from me.
Jasmine
Jasmine
@YuvrajSingh... All the best to you as well
Yuvraj Singh...
Yuvraj Singh...
@Jasmine to me for what?
@Jasmine ah,...
 
8 hours later…
M. Guru Vishnu
M. Guru Vishnu
13:18
Could someone help me with the following question? :
-1
Q: What is the significance of the downward arrows in energy level diagrams in organic chemistry?

M. Guru VishnuThe following text is from Solomons, Fryhle and Snyder Organic Chemistry for JEE (Main & Advanced) Third Edition, chapter 1 "The Basics: Bonding and Molecular Structure", page 13, topic 1.5 "Resonance Theory", sub topic 1.5B "Schematic Energy Level Diagrams of Some Mesomeric Molecules/Ions": ...

organic-chemistry energy terminology resonance
Rafael Nadal
Rafael Nadal
14:15
@Fancy-Toon hey are you sure about "written that addition of RLi to a,b unsaturated carbonyl compounds is exclusively 1,2 addition" ?
Because chem.libretexts.org/Bookshelves/Organic_Chemistry/… states that RLi also gives 1,4 adduct.
And it should be because both are strong nucleophile. And completely follow hsab rule.
Which book are you following??
Fancy-Toon
Fancy-Toon
14:34
I follow cengage organic chemistry..
for IIT JEE advanced..
How to add images .. I can show u.
Fancy-Toon
Fancy-Toon
14:49
@RafaelNadal bro, isn't it mentioning Organolithium reagents under the category of " nucleophiles which add 1,2 to a,b unsaturated carbonyls" ..
Rafael Nadal
Rafael Nadal
15:13
user image
From: J Clayden Organic Chemistry.Pg no 510
Idk why but there is huge contradiction b/w indian and foreign authors especially in such topic.
And Indian authors don't give any reason for their statements.
I'm also very confused what to follow and what not.But i'm going with foreign authors.
just to avoid unnecessary confusion!!

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