There’s a dip from N to O because the N sub shell is half filled which is relatively stable. But I don’t understand the dip between Be and B, and Mg and Al. The lecture notes say that this is because the electrons in Al and B are more shielded but I don’t really get this.
Also what is the method to figure out which elements has a higher ionisation energy, atomic radius, electron affinity and so on when all of these trends have exceptions?
I am currently writing a chem paper on arenes and bond strength of varying structures. I can't find any data online for bond dissociation enthalpy but I've found a bunch for IE, would I be able to link my findings with IE, to explain a trend for bond strength?
TBH im not really certain what you can do with atomic emission spectrum. I understand how to calculate the frequency and wavelength of the photons given the various energy values in energy levels, but I don't understand how you interpret and get quantitative data from the emission spectrum
I have a compound with a pKa of 8,6 and I want to know whether it’s ionized (charged) in a basic solution (in the intestine) or unionised. They state it’s at physiological pH in the intestine (which is around 7.4 I assume). But just really confused on how I figure this out. How do I figure out whether it’s ionised (charged) or unionised(not charged/natural)?
Edit to add; they’ve written pH is 6.4.
Google's answering every question except the one I'm asking it and using words that hurt my brain.
It basically sounds to me like oxidation and reduction are just specific ways of describing ionisation, but atoms described as oxidised/reduced are written with roman numerals, whereas atoms described as ionised are written with normal numbers, which seems to me to suggest that they're different.
Edit: I'm just now remembering the atoms I've seen written with normal numbers were describing isotopes, not ions. I am a dumb. Still though, I could be misunderstanding ionisation & oxidation.
So I understand what an ion is, when an atom's number of electrons and protons become imbalanced it becomes an ion, if it's more protons than electrons it becomes an "anion" anions have a negative charge and ions have positive ions.
But what does this actually mean from a larger perspective? Anything? Does it cause materials to react in ways? Like causing rust or something? If I remember correctly a static shock is essentially your electrons transferring to the ion to make it balanced again.
But what about if it swapped, if an electronically charged item like a battery or an electric fence or whatever was an anion, would that make it not shock you? Is that what it is when it's not powered up? And then the power supply adds more protons to create the shocking effect when something touches it?
Or am I totally missing the mark in how this stuff works?
I know that the successive ionisation energies of an element increase steadily and then jump at defined places. This provides evidence for the existence of quantum shells.
What I don't get is how the first ionisation energies of successive elements provide evidence for the presence of sub-shells.
Li -> 1s² 2s¹ Mg -> 1s² 2s² 2p⁶ 3s²
So, Li 's radius is smaller than of Mg's. And Li's last orbital(2s) is half-filled where Mg's last orbital (3s) is fulfilled. I am in 11th so my understanding isn't that great on this topic.
My question is why Mg's ionisation potential is higher than Li's ?
So we were studying how pH effects enzymes, and the teacher mentioned something about it messing with the bonds between the R groups. Can someone explain that to me with a little bit more detail please?
Single‐atom catalysts (SACs) have become a prominent theme in heterogeneous catalysis, not least because of the potential fundamental insight into active sites. The desired level of understanding, however, is prohibited due to the inhomogeneity of most supported SACs and the lack of suitable tools for structure‐activity correlation studies with atomic resolution. Herein, we describe the potency of electrospray ionisation mass spectrometry (ESI‐MS) to study molecularly defined SACs supported on polyoxometalates in catalytic reactions. We were able to identify the exact composition of active sites and their evolution in the catalytic cycle during CO and alcohol oxidation reactions performed in the liquid phase. Critical information on metal‐dependent reaction mechanisms, the key intermediates, the dynamics of active sites and even the stepwise activation barriers were obtained, which would be challenging to gather via prevailingly adopted techniques in SAC research. DFT calculations revealed intricate details of the reaction mechanisms, and strong synergies between ESI‐MS defined SAC sites and electronic structure theory calculations become apparent.
https://ift.tt/2UFlfK8
So a player of mine wants to take the Ionisation trait (Astronomy) and then use an Ion weapon with the "Mass Charge" Disruptor variation.
My problem with that is that the weapon cannot function without this specific trait – so why should something like this exist? And even if it existed, what would happen were anyone else without this trait to pick up this weapon? Would it simply not function in their hands? Would it work like the normal weapon without the variation? And if the latter, shouldn't he be able to use it without the variation as well?
In my eyes, allowing a variation due to a keyword gained from a trait opens up a whole can of worms. Is there any word on this?
I'm currently writing a paper about bond energy in arenes and I can't find any data on it, so I'm hoping to use IE data if possible. Of course, to do that I'd need to explain the correlation between them if one exists.
