The Periodic Table

Avatar Shiny

01:56

@Abcd How to trigger Abcd 101 Step 1: Insult NCERT Step 2: Wait

@GaurangTandon Do you want to be the legend who took down all the homework questions down singlehandedly?

You edit like 50 posts a day

Gaurang Tandon

02:17

@AvatarShiny haha :P i'm just going through past questions to know more about chem; i'm surprised how many things I didn't know before! editing questions and answers is just a by-product of it

Avatar Shiny

02:40

Yes yes become wise

ArtOfCode

05:12

→ 22 messages moved to Trashcan

Tanuj

well done !

ArtOfCode

pointless argument is pointless and stops now

Avatar Shiny

What sort of dark magic is this

ArtOfCode

the sort where messages magically disappear

Tanuj

@ArtOfCode So you're the mod ?

ArtOfCode

05:17

I'm a mod, yeah

Avatar Shiny

@ArtOfCode Wise wizard, if you seek an apprentice look no further.

Oh

Tanuj

cool ! I didn't vote for you ;)

Avatar Shiny

That makes more sense

@Tanuj ?

Vote for what?

Tanuj

Yea i didn't cause I'm new to the site and didn't know about that and maybe voting took place before i came here

ArtOfCode

@Tanuj that'd be 'cuz I'm not a Chemistry mod :P

Tanuj

05:19

You're the HR mod right ?

ArtOfCode

aye

Avatar Shiny

@ArtOfCode All mods can do that?

ArtOfCode

All mods have mod powers everywhere in chat

Tanuj

@ArtOfCode Captain !

Yeah , we poor citizens and then you're the royal society !

ArtOfCode

eh, less royalty, more cleaning crew

Tanuj

05:21

They say "all good boys go to heaven"
But bad boys bring Heaven to you

Tbh , it'd be quite fun to be a mod if you ask me

Avatar Shiny

@ArtOfCode how did you get to know a pointless discussion was going on

Tanuj

I told him

Avatar Shiny

Are there bots crawling through all the chats

ArtOfCode

same as always... flags

Tanuj

@GaurangTandon Welcome Tandon !

How was Ganit ka paper ? @GaurangTandon

Gaurang Tandon

05:24

@Tanuj it was easy; i did all correct; hehe :P

Avatar Shiny

@ArtOfCode My SE knowledge has increased, I thank you for imparting your wisdom.

Tanuj

cool :)

That's less like imparting and more like 'imfarting'

Avatar Shiny

@Tanuj You're insulting the mod?

Tanuj

@AvatarShiny Yea i am

ArtOfCode

meh

insulting mods is hard

Tanuj

05:27

where did you sell your sense of humour ?

ArtOfCode

we see all the insults

Tanuj

@ArtOfCode Yeah , wasn't insulting ya though , someone just lost the power of reading and analysing sentences.

ArtOfCode

shrug

Tanuj

lol

ArtOfCode

wouldn't be hard to read that as an insult

Tanuj

05:29

looks like you're offended

ArtOfCode

heh, nowhere near

Tanuj

thank god , cause it would've been impossible for me to calm you down

ArtOfCode

why the unnecessary swearing?

Tanuj

corrected it , got flown into emotions

ArtOfCode

fair

1,3-feeds

06:16

0

Q: What is the standard LaTeX depiction of G "naught"?

A user today wrote $G^0$ (G^0) to indicate standard Gibbs energy. I quickly edited it to $G^\circ$ (G^\circ) instead as that's the notation I'm used to more. However, then I realized an intriguing fact. Whenever I speak $G^\circ$ (in English at least) I say it as "G naught". I don't call it "G c...

discussion

Abcd

06:46

@GaurangTandon Cool. Had you solved full ML Agarwal?

1,3-feeds

0

Q: Flag for homework answers/comments

As per the homework policy As a community member, what should I know? Watch out for answers that provide a full solution. Downvote, comment, flag. Watch out for long comment discussions. Conceptual ones are OK, but advise the users to take it to chat. Homework posts are quite...

discussion feature-request

Gaurang Tandon

@Abcd hehe, I picked it up just the day before and stormed through some random questions

i spent the entire year solving cengage tewani and coaching workbooks

ml was a distant galaxy lol :P

Abcd

07:03

@GaurangTandon Okay. Besides, it has really easy questions...

@GaurangTandon that arctan a+ arctan b + arctan c = pi question could also be done using complex numbers....

Gaurang Tandon

@Abcd yeah I think I recall reading a Math.SE post somewhere doing it geometrically too

but I guess in boards we gotta do only those things which the examiner understands :P

Abcd

@GaurangTandon it was my question only. math.stackexchange.com/questions/2639690/…

Gaurang Tandon

@Abcd oh cool, i was referring to another one though; it was at +50 score I think; fairly popular; though I went for the lame approach and took tan on both sides in the exam :P

1,3-feeds

0

Q: Standard LaTeX notation of SN and multiple acid dissociation constants

I find these inconsistencies a lot in older posts and till now haven't found a suitable response, so I decided to post eventually. SN notation: I have found three popular notations for this: $S_N2$ $S_N2$ $\mathrm{S_N2}$ $\mathrm{S_N2}$ SN2 S<sub>N</sub>2 Multiple acid dissociation constants...

discussion

Tanuj

08:08

@Abcd Hey !

@GaurangTandon Hey

@AvatarShiny Hi

Abcd

@Tanuj Hi?

Tanuj

@Abcd Is there Mathjax in chats too ?

Abcd

yes

Tanuj

Wow ! All this time and i didn't know

I kept wondering why everybody wrote such complicated codes in chat

2

How do i get it ?

Abcd

@Tanuj tinyurl.com/cfqcvpc

Tanuj

08:16

What do i do ?

Abcd

31 secs ago, by Abcd

@Tanuj http://tinyurl.com/cfqcvpc

Tanuj

Should i just click start chatjax ?

Abcd

yes

Tanuj

that's it ?

Thanks

So do i have to open it every time to get mathjax ?

Abcd

bookmark it

Tanuj

08:18

so , I'll still have to open it everytime , right ?

Tanuj

08:33

@Abcd Still not getting it (the Mathjax)

Avatar Shiny

08:59

$\ce{H20}$

@Tanuj meh never works for me

$hhh$

Avatar Shiny

10:10

@Tanuj Are you a Punjabi

You give a very Punjabi vibe

Tanuj

@AvatarShiny lol nah , I'm American

@AvatarShiny nah , just kidding , I'm from Dehradun

Vikas Rv

Hey bros

Can I ask post a question related to electrochemistry here ?

mhchem

10:51

@AvatarShiny K_a and \DeltaG^{\circ} are not physical units. Don't use \pu, please.

chemistry.stackexchange.com/posts/91423/revisions

Avatar Shiny

@mhchem Understood

Bounty Hunter

11:49

1

Q: Is it possible to produce hydrogen sulfide with tap water and activated carbon or CuZe?

Please note I'm a bit out of my depth with chemistry. The situation: I have a KDF/GAC water filter that defies logic and releases $\ce{H2S}$ (assuming it by smell/taste) in the water after filtration. Is it possible that some reaction could produce $\ce{H2S}$ with water and $\ce{CuZe}$ media (s...

inorganic-chemistry experimental-chemistry redox

Avatar Shiny

12:17

I could use some help with this post

-2

Q: Why is it nucleophilicity is determined through HOMO/LUMO and +R effect through effective orbital overlapping?

From my basic understanding of of HOMO/LUMO here are a couple of points: HOMO'S are low in energy as they are occupied, LUMO'S are high in energy as they are unoccupied. For an effective MO to form the energy gap between the HOMO and LUMO must be low i.e low energy LUMO's and High energy HO...

organic-chemistry molecular-orbital-theory orbitals resonance

Is this getting downvoted because it's too unclear

?

@Tanuj you are using a phone right

Tanuj

no

Avatar Shiny

Anyway

How did you manage to get it

Tanuj

go to math.ucla.edu/~robjohn/math/mathjax.html

Avatar Shiny

Yup

Tanuj

bookmark both links and get them on your bookmark bar

just click on the first one whenever you're in the room

Avatar Shiny

12:22

$hebdbb$

Tanuj

got it ! ?

mhchem

@AvatarShiny :-) Thanks

Avatar Shiny

Nope

Tanuj

awhh why ? :(

Avatar Shiny

¯\_(ツ)_/ ¯

Tanuj

12:26

damn ! Try it sometime later , didn't work for me the first time around too

Avatar Shiny

Thanks tho

Tanuj

@AvatarShiny could you check this chemistry.stackexchange.com/questions/91436/…

Is it good ?

Avatar Shiny

@Tanuj Yeah man already upvoted that

Tanuj

oh okay

1,3-feeds

0

Q: Which is the correct description - "hydrogens" or "hydrogen atoms"?

This has really been troubling me for quite a long time now. I don't have the relevant literature to confirm whether writing "hydrogens" is correct or "hydrogen atoms" is (for the same matter, "oxygens" vs "oxygen atoms", etc.). According to me, "hydrogen" refers to the element hydrogen. Thus, "...

discussion

Secret

13:11

!!retable

Apoorv Potnis

13:24

@Loong Do you know any abridged/short version of the 2013 IUPAC naming rules? The actual book as you know is very big and many websites and books follow the old rules.

Tanuj

15:22

guys

\cdots

oops

Guys chat.stackexchange.com/transcript/message/43099070#43099070

check this out

3

Q: Axial - Equatorial in Cyclohexane - Chair Form

How can I know about the configuration of bonds in the chair form of cyclohexane ? How do I know which bond is equatorial and which one is axial ? I've searched this for quite a while now and I've still not found a 'rule' as to how to identify which bond is equatorial and which one is axial . ...

organic-chemistry cyclohexane

Zhe

You look at the table of A-values and you try to put the biggest groups equatorial

Tanuj

What do you mean by A- values ?

Zhe

standard definition

A value

A-Values are numerical values used in the determination of the most stable orientation of atoms in a molecule (Conformational Analysis), as well as a general representation of steric bulk. A-values are derived from energy measurements of a monosubstituted cyclohexane ring. Substituents on a cyclohexane ring prefer to reside in the equatorial position to the axial. The difference in Gibbs free energy (ΔG) between the higher energy conformation (axial substitution) and the lower energy conformation (equatorial substitution) is the A-value for that particular substituent. == Utility == A-values help...

Tanuj

okay

I can't make out fully everything that's written , can you summarise in simpler words what that exactly is ?

Zhe

Put the biggest groups equatorial

Tanuj

15:32

@Zhe That's understandable , but lets say I'm given a cyclohexane molecule in chair form , then how do i tell by looking which bonds are E and which are A?

Tanuj

15:46

Guys any about this ?chemistry.stackexchange.com/questions/91455/…

Zhe

15:58

which bond?

It sounds like you just need to practice drawing chairs

Unfortunately, I'm not sure I'm going to be good at understanding your problem at this point

unless you are very specific about your issues

Apoorv Potnis

16:11

Does anyone know how to get upright partial derivative sign in MathJax?

Zhe

16:31

You mean pard?

$\pard$

or is it partial

$\partial$

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