Holmium - Periodic Table of Videos
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- Опубликовано: 20 авг 2015
- A new video about the element Holmium, featuring Stephen Liddle and Martyn Poliakoff.
Ytterby video: • Ytterby Mine (source o...
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Наука
_"Languid centaurs praise Ned's promise (of) small european garden tubs. Dinosaurs hobble erratically thrumming yellow lutes"_
...where can I buy Sir Martyn's brand of _green tea?_
Daniel Renard "praise"
***** thanks. fixed. Also realised it was obviously "lutes" (instrument) for Lu and not "loots".
I tried looking up the fun little mnemonic on Google, but was unsuccessful at first, but I finally found it.
Daniel Renard
A+
+Daniel Renard
Dynosaurs
lol
+Daniel Renard I've been memorising all the lanthanides, just as a way to help me remember this mnemonic to scare people with.
Oddly enough I just use the element names as a mnemonic to remember "Languid centaurs praise Ned's promise (of) small european garden tubs. Dinosaurs hobble erratically thrumming yellow lutes"
It certainly has the most gangster abbreviation.
+bullsquid42 can now now go around school shouting HO lol... holmium miss lol
+bullsquid42 *_Saw that one coming Killometers off._*
terminator6267
Yeah i guess it was kinda cheap. Maybe I should've made a Santa joke instead ...
It's okay. I'll tell Gordon Freeman that you're here.
terminator6267
I stopped talking to him after he never showed up for that third date.
The "holm" in Stockholm means a small island. It's not very common in English anymore but still remains in Nordic languages like Swedish.
The "stock" part is either stock (log, stake, pole) or stäk (apparently old word for bay)
I thought there was a new element for a second there, because I didn't recognise the name "Holmium".
Same tbh, and I'm studying chemistry at university 😂
I also couldn't remember this at all.
Jackson Kennedy I also study chemistry at uni and the only reason I know about is because I'm swedish!
Zoofus
I'm Aussie
Zoofus
And I'm more studying Agricultural Science (which heavily includes chemistry)
That has to be the most ironically difficult to remember mnemonic ever to have been come up with...
Yes. Wouldn't it be easier to just learn the element names?
Johnny Mnemonic.
Well, Thom, there _are_ fifteen Lanthanides to remember.
This is how I remember how to spell "mnemonic"- Me No Ever Memorize Orangutan Nevermind Indonesian Camper. It works everytime I have to write "mnomonic". So far twice.
@@the_original_Bilb_Ono best comment I've read in some time.
You need to do like a top 5 most underused elements!!!
Glorius HD quality, just what the channel needs, love it!
Hypobromite before Holmium
Aidan Fehr Unless the Holmium's got no chloride
+Aidan Bromine before Holmium
bromine oxide before holmium sulfide
🤣
This episode for me is in the top 3 of all of your videos I have watched. Great solid science discussion. Thanks especially for the odd/even Helium piece! Both Professors are the cat's meow.
I simply love the periodic table of videos
!
The detail and specificity are really nice. Please do more!
Fascinating and well presented to boot. Thanks, Brady.
where the hos at
Lewis Witton hooooo =0=\
idaho
where the Hos at*
Really happy about this update, another excellent video!
You're a genius sir.
Your students are blessed to be taught by you.
Things I love about my casual interest in chemistry:
Waking up to a video which says “Ho”😂
Great job once again guys! Thanks for sharing!
That is quite a long Mnemonic to remember for the Lanthanides.
There are a lot of lanthanides
Father Christmas adores Tri Holmium, Ho Ho Ho. (And keep your new Holmium with you for a better holiday).
For HPLC UV detectors (DAD or VDW or MWD) Holmium filters are still used for calibration. So it's still quite important.
Ned's promise... Like "Promise me, Ned?"
Love your videos. Thank you!
lots of interesting facts! and honestly, i hadn't even heard of Holmium before
Thank you for educating me!
I think you might of forgot the coolest thing about holmium. The way it changes color in the spectrum of visible light it's in blows my mind every time I see it.
No, your students think you're a genius because... you're a genius.
Yea, probably XD
Please make an updated Thorium video! Thanks!
Im getting some holmium cant wait for it.
its interesting how the lathinds electron configuration is very unormal and that there compounds are not very stable as they can decompose quite easly apart from neodymium and iron (neodymium magnets)
Thanks for doing my video request!
Not too long ago in one of our lab group meetings holmium was brought up...but I can't recall if it was for quantum dot applications or liposome modification.
What a nightmare. Keep thinking, it'll come to you.
I'd really like to see a video about the molecule on the cover of the Nature Chemistry journal. I believe it was the facially polarized hexafluorocyclohexane molecule that was recently synthesized. It was an interesting challenge that produced a very unusual molecule - definitely worthy of some attention.
This channel rarely uploads videos in comparison to other channels I watch and I like that, because these videos have a lot of effort put into them and their brilliant - (and Brady also has a lot on his hands). Just trying to clarify that this comment so far is not meant to be percieved as offensive, but quite the opposite. And when I see that a video has been uploaded, I get really *really* excited and get some popcorn, and I love it.
Thank you for making these videos.
Finally new video! Thanks!
Those are some Dank protons.
Lunus
Holmium pole pieces are used in MRI machines, in which extremely intense magnetic fields nuclear spins can be measured.
I don't know chemistry that well but it sure is interesting that when you review Holmium's characteristic traits it seems like it could be a major component of a neutron star. It absorb neutrons and has the highest magnetic moment of any other element. Also, I learned that Holmium has a half life of 1200 years because of it's high spin. Also, it;s high excitation rate produces gamma rays in the decay process. There are so many characteristic traits of Holmium that make me think of a neutron star/black hole. It most certainly SHOULD NOT be the forgotten element, otherwise, we will be in spiral straits.
Would be great to see a video about THC. To get some facts from someone who really knows what they are talking about. Love the videos! :)
6:16 Holmium is my spirit animal.
Man, this channel is so freaking cool
8:06 stunning to learn
Thanks for the video.
Can't wait to get a t-shirt with this element on it!
For those interested, a Dutch company uses radioactive holmium isotopes in microspheres to treat unresectable liver cancer.
Where can I purchase the Periodic Table tie worn by Sir Martyn?
"Chem Fever Series"
Holmium is the 67th element in the periodic table. It is soft and malleable with the symbol being Ho. This element belongs to the series of lanthanides in the periodic table. It has excellent stability at room temperature and is soluble in acids.
Holmium can absorb neutrons, so it is used in nuclear reactors to keep a chain reaction under control. A magnetic pole piece with magnetic iron powder to demonstrate that Holmium has the highest magnetic strength of any element. Holmium is used in alloys for the production of magnets.
Holmium and its soluble salts are slightly toxic if ingested, but insoluble holmium salts are nontoxic. Metallic holmium in dust form presents a fire and explosion hazard. Large amounts of holmium salts can cause severe damage if inhaled, consumed orally, or injected.
Atomic properties
Atomic number (Number of protons): 67. Atomic mass (Number of protons + neutrons): 164.9. Valency: +3.
Holmium is found as a minor component of the minerals monazite and bastnaesite. It is extracted from those ores that are processed to extract yttrium. It is obtained by ion exchange and solvent extraction.
The color of holmium is silvery white.
holmium (Ho), chemical element, a rare-earth metal of the lanthanide series of the periodic table. Holmium is a moderately hard, silvery white metal that is relatively stable in air.
Holmium metal should be stored in tightly-closed containers under argon or mineral oil.
Naturally occurring holmium consists entirely of a single isotope, holmium-165, which is not radioactive. The longest-lived radioactive isotope is holmium-163 with a half-life of 4,570 years.
(hseguru@yahoo.in).
I think I'll never outgrow laughing at the element "Ho"
what's Santas new favorite element?
Holmium Holmium Holmium
Jorgen223 I don't get it, please explain.
ho ho ho
Fair enough.
+Jorgen223 Ahh, I see what you did there... :D
+Jorgen223 I laughed harder than I should have.
Whoa that compound on the chemistry journal is really cool. η‐1, 2, 3, 4, 5, 6‐Hexafluorocyclohexane ...
7:07 You got mail!
How come on the graph Samarium and Ruthenium seemed to break the up-down pattern? So did lithium and boron
Never heard of a mnemonic for the lanthanide (or any other) series
What property does it have when it's dirty?
Am I the only one who feels a strong connection to Holmium after hearing how rare and antisocial it is?
Hahahahaha :-D
I had to make an advertisement for holmium for a school project, and we needed to make a slogan for the element. I chose it so I could write the word "ho" in giant letters on my paper. For my slogan I wrote: "An element not just for show, meet the wonderful magnetic ho!" Best project ever.
Gold
Platinum
In case you are wondering about the missing 43 element on the chart at 7:45 its technetium. Its missing because all of its isotopes are radioactive and its rarely found in nature.
That odd/ even thing - amazing, and obvious once you know it.
I wish all of the shorter element videos got this much detail to them.
I love the Professors prescription safety glasses..!!!!!
It's such a shame you didn't show us elemental sample of it again, it just adds so much to the video story.
1:18
actually, I decided to memorize the whole periodic table.
I'm currently in 110
8 more to go
actually, 17, if you consider some of them, that don't hava a fixed name.
Iam at 70
I'm at hydrogen.
This is so cool!
Nice element. I bought a kilo of it along with a kilo of dysprosium about two weeks ago. I am in the process of making a lanthanide periodic table made out of real lanthanides - and in no less than 1/2 kg amounts per element. Photos on request!
Is that a periodic table clock in the background? :D
Corthez Blake Yes, it is.
Corthez Blake i want it
Jack Beyer me too
+Corthez Blake where?
Spoder Man
the white clock in the background of the guest speaker.
Why is the stretch of elements between somewhere around Mo to Nd flipped? is there a radioactive element that forces an even element to be rare, and that got carried on?
No the one after Nd also skips a vertical line so in fact the even-hi odd-lo continues. Prometheum is omitted, presumably as you say because it doesn't fit the pattern.
I think that Gd is a true neutron eater. When it comes to abundance of odd isotopes it's more about the pairing energy because nucleons prefer to have a couple. Other factor which makes some nuclei more abundant is the shell energy. Similar to electrons you can quantize nucleons in a potential (but created by themselves) and you get different orbitals and shells. When the shell is full you have a magical nucleus. Still love you guys!
The very end was hilarious.
At 1:09, what is that periodic table? It looks interesting.
The hallmark of genius is the continued fascination with discovery . Poliakoff qualifies .
strong magnetism at low temperatures... damn that instantly boosts my imagination for my next pen and paper session :D
You would like superconductors then
Thinking that would make magnets for great extreme cold electric motor.
Thank-you, Martyn. _Languid Centaurs Praise Ned Promising Small European Garden Tubs; Dynosaurs Hobble Erratically Thrumming Yellow Lutes_ is even easier. Any better ideas for Yb?
How do remember the actinides?
I really like this video.
on September 24 the LHC(Large Hadron Collider) Zern(Switzerland) will maybe create new elements.if everything goes well
+Thomas Heinze Highly unlikely, with the energies involves in the collisions there no atom/nucleus will survive. That's the main reason they don't fuse into helium when they try using protons in collisions.
so which element does the professor think IS the most underused? maybe a short list of the 5 most underused?
The chart N vs Z appears to be relative prevalence of elements in the sun. This will be quite different to relative abundance on Earth, or the universe as a whole, since a fair bit of "metal" is created in supernova explosions at the end of a star's life. And the universe is still fairly early in it's star phase. We see a much higher abundance of heavier elements (referred to astronomically as metals) on earth.
I would say that Gadolinium is perhaps the more familiar neutron absorber than Holmium.
might be a silly question but is Holmium reactive with other elements? such as the reaction you find with aluminum and mercury or even fluorine with just about anything.
+Scott Mantooth Oh I guarantee it. The only elements that are arguably not reactive with anything are the noble gases, though even then there are exceptions (ie xenon) though there's debate as to whether or not they count (it depends on how 'bonds' and 'reactions' are defined). Holmium would have 2 outer electrons in its highest shell, which would most certainly be reactive (especially since the larger the atom, the weaker the hold on the outer most electrons, analogous to how gravity weakens as distance increases). And anything that could donate electrons easily can do some form of reactions.
thanks for the info...very helpful
1:26 you sir are a genius!
Damn shame the atomic number for Ho wasn't 69. 😔
who thought of Sherlock Holmes at first ?
Elementary, my dear Luca!
I thought you were an atheist, not a faitheist.
Je Suis Ce Que Je Suis
i lied !
MOUHAHAHAHAHA
>:D
Luca Hulot That's quite a satanic laugh you've got there.
Je Suis Ce Que Je Suis i have faith in satan.
s'amen.
If you fuse it with Gd it is a very interesting magnetocaloric. :D It has been modeled to be very powerful solid state refrigerant. :) It might be piggiebacking on Gd's succes though ;)
I'm not a scientist yet I still think that comment was quite clever.
0:56 my mind has been forever altered by the imagery of this acronym
Yup repaired a few holmium lasers. The lasing rods are very deep green because they are doped with chromium and thulium as well as holmium. This allows the lasing rod to operate near room temperature 🤓
You remind me of my beautiful late pop ❤️
funny that stephen says lanthanides dont change much. i did research that was based on them changing depending on whats bound to them! :)
You need to do a video on learning the elements of the table, not just the first row f
You are a genius!
think of Holmium as the Hobbit element. it lives in a Hobbit Hole in the middle earth elements and comes out every once in a while to go on unexpected adventures!
#gregghobbitheadturkington
Ah, yes; Ian Holmium.
Middle rare earth.
dude is such fun teacher!!!🤣🤣🤣👍👍👍
Can us 'Periodic Videos' fans be referred to as "Periodicals?"
I helped to develop technology to use holmium in multiple myeloma. It's useful in cancer therapy
Sherlock Holmium: it’s elementary.
You are a genius
I wonder what the least useful (stable) element would be.
6:00 So, obviously, it's not the valence electrons creating the spectrum, it has to be the unpaired electrons in other shells.
Bros before Ho
...had to be done
ImAzraa Bromine Oxide before Holmium
forgot the (s) for solid
nice one though
1:24 The students say" Wow! You're a genius!" Ummm yeah... You're a genius.
next schrodinger equation plzzz..