The Periodic Table

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Mithoron

00:22

@uhoh That's not a good question, and hardly about astronomy.

Also already answered.

4 hours later…

M.A.R.

04:13

@uhoh Rather boring answer, isn't it? Why should it be migrated to Chem to get the same answer?

5 hours later…

uhoh

09:07

@M.A.R. who said it should be migrated? The answer can be Chemistry-like right there, what would be helpful is some insight into why methane has IR absorption in that spectrum but N2 and O2 don't.

Chemistry comes up from time to time in Space SE, it would be great to have some more insight there. I'm a big fan of cross-pollination between SE sites

3 hours later…

M.A.R.

12:36

@uhoh Oh, well, to link it here weakly implies it, but now I don't know where I got that idea. Shrug

2 hours later…

Hot nitric acid (HNQ)

14:44

Q: Is the given statement regarding Radial Probability Distribution Function correct or not?

Radial Distribution Function $(4πr^2R^2(r))$ gives the probability of the electron being present at a distance $r$ from the nucleus. Answer: The given statement is correct. My Query: According to me, isn't the Radial Probability Distribution Function ($RPDF$) used for finding the probability of...

5 hours later…

Nike Dattani

19:32

Anyone interested in ALLOYS or METALS? 21 hours left on this bounty:

A: Special quasirandom structures vs virtual crystal approach

For VCA, as the construction is as simple as averaging the potentials of atomic species, the main advantage is computational. This is in the sense that it is very simple to change the compositional ratio of a solid solution by just changing how you average the potentials, instead of having to wor...

Nike Dattani

19:49

@orthocresol are you replying to a bot?

@M.A.R. It's not really nice to call someone's work "boring".

M.A.R.

20:14

@NikeDattani I didn't call someone's work boring. I called "there's no mystical reason behind it, it's just not shown in the graph" a boring, as opposed to intriguing, answer. If you disagree that's boring, then perhaps there are no intriguing answers either.

Nike Dattani

@M.A.R. It came across as if you were saying that the answer is boring. I actually went to the link just to see how bad the answer was and I was pleasantly surprised that it was actually quite a good answer.

M.A.R.

@NikeDattani It's a correct answer, succinctly written. It's boring in the sense that it doesn't help me learn much, or find new keywords to learn much about. The answerer cannot help it, but that doesn't make the answer any more interesting.

Nike Dattani

@M.A.R. I suppose it's possible that not everyone at Astronomy.SE is an expert in chemistry.

M.A.R.

@NikeDattani I'm not an expert in chemistry :)

Or anything.

Nike Dattani

@M.A.R. At least you have 10k on Chem.SE (I only have 1k !), and you didn't learn much from that Astro answer. I certainly learned a lot from it I think. I didn't know the reason why N2 didn't show up in that spectrum but the answer now makes sense to me.

M.A.R.

20:58

@NikeDattani Rep is a good measure of participation, but I'm not sure how well it correlates with expertise (for existing, >1 rep users). Ask a few clickbait questions, and answer a few, and 10k is right around the corner. I would need a year of things to read before I even begin to fathom your Materials Modeling answer.

Hot nitric acid (HNQ)

21:12

Q: Why are acetic acid and sodium bicarbonate mixed to unblock a drain?

I have always wondered about the rationale behind combining white vinegar and sodium bicarbonate to perform household cleaning jobs, and to block drains. I would have expected white vinegar to act well on its own as an acid cleaner, and sodium bicarbonate to act well on its own as an base cleaner...

acid-base cleaning

Bounty Hunter

Q: Interaction of trifluoroacetates with acetylcholinesterase

There exists a substance called TMTFA, or 3-(N,N,N-Trimethylammonio)trifluoroacetophenone. It is known for being able to inhibit acetylcholinesterase at femtomolar concentrations. The TMTFA-AChE adduct resembles the tetrahedral transition state through which the hydrolysis of acetylcholine by the...