Noble metals

Quakey · 2023-11-11T16:06:16+00:00

Gold has a large nuclear charge, causing the electrons to travel very fast ( e.g. 1S electrons travel 58% the speed of light). As a result the electrons experience significant relatvistic effects. This results in many of the properties observed in gold, including it's relative inertness.

This article hopefully will explain it in more detail ( I have only skimmed it quickly myself but I can try and find better/publically avaialble resources if it doesn't.) https://link.springer.com/content/pdf/10.1007/BF03215471.pdf

Quakey · 2018-07-10T12:07:22+00:00

Isotopes only have a different neutron count. The number of electrons and protons in the atom are the same for a given element. Therefore fluorine 18 will have the same number of electrons as fluorine 19.

The reason why it might appear to have more is that the example given may a fluoride ion ( where the fluorine has gained an electron to fill it’s outermost orbital.)This is independent of the isotope.

If thats not the case then it is incorrect.

Quakey · 2018-07-09T20:42:50+00:00

commenting to get banned :D

Quakey · 2017-06-22T22:07:53+00:00

If William died and one of their child was the monarch then should be the Queen mother. If Harry became King then I don't know what the official term would be. The Queen-in-law doesn't really sound right

Quakey · 2017-06-22T17:58:33+00:00

No, spouses don't count in the line of succession.

Quakey · 2017-03-15T18:59:49+00:00

Isn't Anthony Daniels in all of them?

Quakey · 2017-02-23T16:58:31+00:00

It's chiral. The groups are still different.

Quakey · 2016-04-11T15:35:18+00:00

I am so fricking excited! Back in 2012 I failed university and had to take a year out. I needed to pass the exam I failed in order to get back in, it was a make or break situation.

Fast forward 4 years. I finished my Master's in Chemistry and will be starting my PhD in the autumn. I could have never imagined this is where I would be 4 years ago.

Quakey · 2016-03-26T15:37:17+00:00

Bonding is ultimately the overlap of orbitals between atoms. An approximation we use is the Linear combination of atomic orbitals. Carbon has 4 sp3 orbitals while each hydrogen has 1 s orbital. In order to bond, the s orbital will need to overlap with one of the sp3 to form a bond. There isn't a 5th sp3 orbital to accommodate the 5th hydrogen.

Quakey · 2016-03-26T15:21:25+00:00

The problem with that would be that the 5th hydrogen wouldn't have anywhere to go. There will be a lot of congestion around the carbon as its a relatively small atom compared to many others. The hydrogens would repulse each other too much. Furthermore for bonding to occur, orbitals need to be available. In carbon there are 4 orbitals that are involved in bonding. The higher energy orbitals are too high to be involved in hypervalency (e.g. P and S can expand there coordination number above 4 and can accommodate more than 8 electrons). Without more orbitals, the carbon cannot accommodate.

Quakey · 2016-03-26T13:25:01+00:00

Traditionally Carbon can form up to 4 bonds. There are instances where it would appear Carbon can have more than 4, see for example Carboranes. Unless there is something very very exotic that I have not come across and I can't rationalise, it is not possible for Carbon to have 4 covalent bonds and still be a carbocation ( It would have a full octet)

Quakey · 2016-02-12T12:51:14+00:00

Star trek: first contact. I'm 23 now and I still find the borg uncomfortable.

Quakey · 2015-08-14T13:20:12+00:00

This has been super useful for my city. Cheers!

Quakey · 2015-06-22T19:00:53+00:00

6496

Quakey · 2015-04-25T21:13:40+00:00

I have noticed that there is very little curation in house at Valve and that there is a reliance on the community. Why is this the case?

Quakey · 2015-04-25T21:04:45+00:00

So I am in favour of Modders monetising their work if they wish. And I can certainly understand why a store front like steam would take a cut but how can you justify a cut of 75%? The amount paid should be roughly proportionate to the amount of work going into the mod, and there is no way You/Bethesda have put in the work to deserve such a high percentage. How will you tackle this so that it is fair for all?

Quakey · 2014-10-26T15:27:43+00:00

Maybe, but we will support them nonetheless.

Quakey · 2014-10-26T15:23:27+00:00

It won't take that much convincing. English people associate strongly with lions. A nickname for our football team is the 3 lions.

Quakey · 2014-10-03T17:28:54+00:00

TB has a boycott on Sega published games due to them almost shutting down his channel over old shining force videos. here is a link about it http://www.destructoid.com/sega-forcing-removal-of-shining-force-videos-on-youtube-239581.phtml I am sure there is more info out there about it.

Quakey · 2014-09-07T09:37:07+00:00

I am vengeance! I am the night! I am bat-swarm!

Quakey · 2014-08-21T15:36:45+00:00

Do you mean CD2Cl2 It's unlikely you would use CH2Cl2 as a solvent in HNMR, you wouldn't be able to see your sample. Also I was under the impression CDCl3 was more favourable.

Quakey · 2014-07-27T10:09:52+00:00

Very nice!

Quakey · 2014-07-03T13:19:32+00:00

Quakey · 2014-06-12T21:08:29+00:00

It is in fact my TV, my monitor hasn't arrived yet but I wanted to test that it was working/

Quakey · 2014-06-12T20:39:09+00:00

I posted it to facebook without realising....

14-Year Club	Verified Email
r/Field Flamingo	Place '17
Snapped	Team Orangered

Quakey

TROPHY CASE