The Periodic Table

user228700

00:27

@paracresol: Yep, the shapes are simpler. Besides, I haven't got many hats to begin with. It was either this or the trophee (I'm not going to wear the log/moon/Darth Vader)

Jan

01:07

If I don’t get Like a Clockwork by next midnight UTC, you can consider the winning condition post a well-received answer every day for nine days wrong.

@Martin-マーチン Well, the idea behind it is a salvageable question which has just been downvoted because it is badly phrased or something. Sometimes, the underlying concepts are in fact a good question and just need some polishing.

Loong

@Jan I am wearing this hat and I don't have so many answers.

Jan

Yeah, the suggestion was do something repeatedly for nine days — voting’s not it, maybe posting answers is also not it. It could still be posting comments or a combination of comments and answers. I didn’t comment on one of the Christmas days, unfortunately.

Hexacoordinate-C

04:08

iflscience.com/environment/volcano-lava-cold-fall-survive

orthocresol

04:22

@Jan I did. :(

Copper

Hello everyone :)

user228700

Hello, everyone :-)

user228700

I have a quick question. Is the cis isomer of compounds such as 2,3 dimethyl but-2-ene less stable than its trans isomer due to steric repulsion?

user228700

04:39

Gah, nvm.

Hexacoordinate-C

05:00

@Kaumudi.H almost yes

user228700

Riight, okay, thanks :-)

Hexacoordinate-C

hum

Sorry I'm very tired it looks to be the contrary

user228700

Nvm, I understood it. Thanks.

orthocresol

Well, that compound looks like a butadiene, not 2,3-dimethylbut-2-ene.

However, yes, trans alkenes are in general more stable than their cis counterparts.

Hexacoordinate-C

It was for the example

But this one isn't good

orthocresol

05:05

The curve should be nearly the same, except that it's shifted by 180 degrees

Hexacoordinate-C

6 am there just came back after a party sorry I need to sleep lol

user228700

Thanks for trying anyway. Goodnight, then :-)

user228700

@orthocresol Right.

user228700

I've another question...

user228700

05:08

user228700

On the website where I found these pictures, it was given that the order of rate for the given reaction is 4>3>2>1 if we take hyperconjugation into consideration.

user228700

(The website: acadblock.com/organic-chemistry/baker-nathan-effect-f0q9)

user228700

It is given that the opposite order will prevail if we take only the inductive effect into account. I don't understand why this is.

Melanie Shebel

Heya all

Copper

07:17

Hello everyone

What accompanying resources such as problems (online, books, etc) would you recommend for self studying organic chem with clayden? Thx

Secret

08:50

2

Q: Why don't we have hyperconjugation with C-C bonds?

C-C bonds are weaker than C-H bonds.So why is hyperconjugation with C-C bonds not possible?

One cannot ever explain the Baker Nathan reaction without an explanation of this

orthocresol

10:07

@Copper use the Clayden 2e questions on the accompanying web page; the password is provided inside the book (if I remember correctly off the top of my head, the username is clayden2e and the password is compound).

user228700

11:06

Hey, everyone :-) Is anybody familiar with the Baker Nathan effect? Please ping me if you are...

Loong

12:30

Would this be better asked on physics?

0

Q: Why are neutrino/anti-neutrino released in Beta decay?

In positive beta decay neutrino are released whereas in negative beta decay anti neutrino are released. From where did they came? Are they produced during the collision? What s it's purpose? Is it to conserve the linear momentum or angular momentum or energy distribution of positrons?

nuclear

DSVA

yes

and hi

Martin - マーチン

aaaargh nuclear

and yes

and O/

@DSVA Please forgive me for my ignorance O.o

Loong

In radiochemistry, we usually simply take it for granted that the (anti)neutrino is released during beta decay. Everything else (observed energy conversation, momentum conversation, beta spectra) is considered to be a result of that.

and hi and O/

DSVA

@Martin-マーチン no problem. I agree that my answer wasn't the best. I will also change it little bit

Martin - マーチン

well certainly a good start :D

thanks for even looking into this

@Loong i like your hat ;)

Loong

12:34

:-)

Martin - マーチン

re: nuclear there was iirc a movement to nuke that tag and replace it with something awesome

the lack of action on this appears to be that people are afraid to touch it...

i mean, i wouldn't want to touch radioactive tags either ;)

Loong

nuke nuclear? That sounds scary.

Martin - マーチン

it is...

wam

9

Q: What is it with the nuclear?

We have a tag on the main site called nuclear. It is home to 48 questions and I do not object its general existence. However, I feel troubled by its name. Most tags are either nouns (e.g. bond) or a noun connected to an adjective (inorganic-chemistry). Nuclear is an adjective as far as my knowled...

discussion tags

wow... it's older than a year O.o

Loong

To correctly organize the related (and often confused) branches of chemistry, we would need radiochemistry, nuclear-chemistry, and radiation-chemistry.

Martin - マーチン

the question is, do we have the questions to fill those tags and how often would they be used wrong, because honestly I couldn't tell the difference

Loong

12:44

Well, we don't get many clear questions about these topics; that's why I answer so many organic nomenclature questions.

Martin - マーチン

ahh yes, i forgot that it is your specialty

well, would you care to reorganise the tag?

Loong

New clear …chemistry tags, and nuke the vague nuclear tag?

3

Martin - マーチン

something like that. I think a lot of those questions simply deal with radioactivity in general, so we could just use that. there are a few others, where I am not sure where to put them

and since you know stuff, you could at least provide a tag wiki that guides the usage

Loong

Yes, I could do that.

Martin - マーチン

but i think nucular has to go sleep with the fishes, since it doesn't help categorising anything...

yeah well, just if you are bored

Loong

12:53

Questions about doing normal chemistry with radioactive substances belong to radiochemistry.

Questions about radiation effects on chemistry belong to radiation-chemistry.

Martin - マーチン

where does nucleosynthesis belong to? Or do we just make its own tag for that?

Loong

Questions about making new chemical substances with nuclear reactions (from simple radioactive decay to reactions in a reactor, accelerator, or star) belong to nuclear-chemistry.

Martin - マーチン

... and here I sit, wondering why I'm freezing... turns out I forgot to turn the AC back on O.o

well, that sounds very good :D

Loong

yes, thus making new elements in the nucleosynthesis belongs to nuclear-chemistry

Martin - マーチン

does any of that conflict with radioactivity

or is that overlapping with a couple of them?

Loong

13:03

"How do I handle radioactive strontium in the lab" is radiochemistry. "Why is Sr-90 radioactive" is nuclear-chemistry or even off topic nuclear-physics. "What happened to my plastic bottle containing radioactive strontium" is radiation-chemistry.

The line between radiochemistry and nuclear chemistry is not always clear.

Maybe, we could recommend a guideline, how to identify whether a question is still nuclear chemistry or limited to nuclear physics.

On the other side of the radioactivity field, we also have the huge topics of radoactivity -> radiation chemistry -> radiation biology -> radiation protection (or health physics).

Health physics is not to be confused with hell's physics.

2

But I don't think that we have many questions about that.

Martin - マーチン

13:24

Oh I'm pretty sure hell's physics is off-topic here and should alway be migrated to Physics ;)

Loong

Where do all the question about radiation protection, shielding, dosimetry, dose assessment, etc. go? Physics.SE, Biology.SE, Health.SE?

I remember only answering a very simple one here: chemistry.stackexchange.com/a/30921/7951

Martin - マーチン

I don't think we get them very often and then we can decide whether they will be answered here or somewhere else. I guess they could be tagged safety and radioactivity

just checked your linked question... that's what was done :D

I don't know much about the scope of the other sites, esp. health.se, either

I wouldn't know if such questions are on topic there, but we could always ask there to see if they want to have them...

it's this grey area: Questions are not necessarily off-topic here, if they are on-topic on another site

orthocresol

13:40

@Loong underappreciated pun

Loong

yeah, the same applies to "hell's physics". :-|

I should link to a Chinese opera gong to mark my puns.

Steve Weiss 9" Opera Gong (Gliss Up)

►

getafix

16:02

dammit

chemistry.stackexchange.com/questions/65344/…

I was writing an answer to this..

:(

huh it was voluntarily taken down, guess the OP isn't interested in the answer anymore

orthocresol

@getafix Post a question, answer it yourself, and (possibly) win a hat.

"Possibly" because, the average reader here is more interested in undergraduate organic chemistry Q&A's... as I recently realised...

Mithoron

16:22

@getafix Maybe I crushed his little spirit ;)

Or OP simply noticed there was no reason for any periodicity...

getafix

@orthocresol yeah might do that tomorrow, should probably call it a night now anyway.

And that is quite true

@Mithoron maybe haha

Although based on his reasoning I did feel he wasn't aware of the role of macroscopic structure when it comes to magnetic properties..it would've been a good opportunity to write about it

Mithoron

@getafix You do it. I guess I'd read a good answer about it.

user123733

18:19

α-D-Glucose undergoes mutarotation to β-D-Glucose in aqueous solution. If at 298 K there is 60%
conversion. Then we have to Calculate ∆G° of the reaction.

How can I ask this question on main site . I am not getting any start

Or can anybody help me in this in chat room

Loong

21:00

@user123733 Do you know that $\Delta_\mathrm{r}G^\circ=-RT\ln K$?

Copper

21:45

@orthocresol Thanks for the suggestion but it seems that the questions are identical to the ones in the book

Sorry I meant which additional resource to the book (which contains a few problems) would be useful (I thought the number of questions in the book alone was not sufficient)

Melanie Shebel

22:19

What's everyone up to?

I'm editing that chemistry jokes article I wrote a while back. :S

Loong

@MelanieShebel Naturally, your "hot" question has become an HNQ.

Melanie Shebel

Awesome! I should just regularly ask weird random questions.

Hexacoordinate-C

22:38

@MelanieShebel what does "HNQ" mean?

Melanie Shebel

hot network question

@Loong It really is OT. Should I flag for deletion and re-ask it on physics.se? I can't delete it given that there are currently answers on it.

@Jan I agree about the off-topicness of my question. Should I re-ask it on phys.se? It's stuck here for the time being and I don't know how to migrate it.

Jan

@orthocresol Oh, so you were the upvote the question had from the beginning =C

@MelanieShebel To migrate, flag for mod attention. Or directly ask @Loong ;)

Hexacoordinate-C

@MelanieShebel thanks

Melanie Shebel

Anyone know what the numbers under my name here mean?

Jan

Combined rep from all SE sites.

Melanie Shebel

22:42

Ah

Hexacoordinate-C

I have 1618 score

One mille in meter

Copper

I only have 254

Loong

@MelanieShebel Did you check whether it would be a dupe on physics.se?

Jan

@Hexacoordinate-C Let me rectify that by giving you 4.5 downvotes ….

Melanie Shebel

Awww

Hexacoordinate-C

22:45

Hum in fact yes I am wondering why have I this value in head

Melanie Shebel

There are roughly similar questions, like "is there something hotter than Plaank's hotness" (I'm paraphrasing, obviously) but nothing that asks specifically about Plaank's hotness.

Loong

For example

47

Q: Why is there no absolute maximum temperature?

If temperature makes particles vibrate faster, and movement is limited by the speed of light, then temperature must be limited as well I would assume. Why there is no limits?

thermodynamics special-relativity speed-of-light temperature

Melanie Shebel

Words hurt.

Copper

@Hexacoordinate-C did you make your profile pic through photoshop?

Hexacoordinate-C

one mille is 1609 meters well I don't remember

@Copper click on my name you'll have all details about the publication :)

Melanie Shebel

22:46

I'm awful at memorizing unit conversions. Heck, there are 5 thousand and something feet in a mile, right?

And I'm an American.

Eh, then I won't ask it over there.

Hexacoordinate-C

Humm no 1.618 is the beginning of the golden number ! :D

Melanie Shebel

Oh, you cheater!

Jan

1760 yards to a mile.

Three feet to a yard, i.e. 5280 feet to a mile.

Hexacoordinate-C

Speaking about that does someone know the website in which you input the beginning of a real number and it answers you different possible exact value of number beginning like the same ?

Jan

@Hexacoordinate-C Don’t start pretending you’re golden, that won’t win you 24.

Melanie Shebel

22:50

3 feet in a yard, so now I just memorize 1760... I want metric.

Copper

@Hexacoordinate-C thanks

Jan

Metric is for those who can’t work with numbers unequal to ten.

Hexacoordinate-C

@Jan I don't understand the "24"

Melanie Shebel

Sometimes when you put a number in Google translate, like English to Italian, "one thousand," it'll give you "1000." It's like ummm wow, thanks, I guess.

Jan

@Hexacoordinate-C The hat.

(Speaking of it; considering the hat I’m wearing should I start calling myself Tarrant Hightopp?)

Melanie Shebel

22:52

That works for me @Jan I can do higher math, but arithmatic really kills me.

arithmetic* apparently spelling too.

Hexacoordinate-C

@Jan where did you see I am pretenting to be golden.. ?

Jan

See the post I replied to ;)

Melanie Shebel

@Hexacoordinate-C You're all over in your corner with your 1.618 :P

Hexacoordinate-C

Yes lol

@Jan ok but I don't really understand the joke there sorry ^^

Jan

Well, you win the hat 24 (which is something golden) for getting a gold badge … and you were on and on about the golden ratio. (Okay once, but it still counts, doesn’t it?)

Hexacoordinate-C

22:55

Do you see me with a hat now ? Because I haven't put one on my picture

Melanie Shebel

The only gold badge I'm close to is... copy editor... but I'm nearly 100 away.

@Hexacoordinate-C No

Hexacoordinate-C

So what is "hat 24" ?

Jan

Unfortunatley. I won two gold badges during last year’s Winterbash. I really should’ve called off fanatic for this year, but …

Hexacoordinate-C

Sorry to insist

Jan

@Hexacoordinate-C winterbash2016.stackexchange.com

Melanie Shebel

22:56

Or I guess maybe famous question...

But I'm 5000 away from that. Ugh, I JUST got that badge before hats.

Hexacoordinate-C

But I didn't win my gold badge during winterbash

Jan

Neither did I. (Okay, 2 during Winterbash 2015)

Melanie Shebel

I only get it for famous question, I have three of those... and one electorate.

Hexacoordinate-C

I'm just upset because the question I asked about organic chemistry didn't give me 200 rep in one day so I'm still at 1/150 to get the golden corresponding badge lol

Melanie Shebel

Mostly I'm upset that I didn't ask this question on a site where I generate ad revenue:

29

Q: How do I figure out the hybridization of a particular atom in a molecule?

I'm learning how to apply the VSEPR theory to Lewis structures and in my homework I'm being asked to provide the hybridization of the central atom in each Lewis structure I've drawn. I've drawn out the Lewis structure for all the required compounds and figured out the arrangements of the electro...

hybridization vsepr-theory

Because given what I get paid per view, that's a $2000 question.

I could use $2000!

Hexacoordinate-C

23:02

OK so I tried to add bacon on my picture ! :)

Melanie Shebel

I see it when I click your icon.

But otherwise no

Jan

@MelanieShebel So could I! How about we share?

Hexacoordinate-C

I don't know why ugh. Maybe it takes time to appear in the chat

Melanie Shebel

I see it now.

My Internet is total rap.

rap

crap. so is my keyboard.

Jan

And again we see why it’s called rap music ;D

Melanie Shebel

23:06

Haha, agreed.

Hexacoordinate-C

@Zhe this one is for you chemistry.stackexchange.com/questions/65363/… if you want to win 10 reputation :P

Jan

23:59

@orthocresol If you have some ChemDraw time on your hands …

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