Francium - Periodic Table of Videos
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- Опубликовано: 8 окт 2017
- A new video about Francium.
More links and info in full description ↓↓↓
Underwater Caesium: • Underwater Caesium - P...
Videos on all elements: bit.ly/118elements
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With thanks to Mauricio Gómez for helping research images.
Also thanks to Charles DeSorcy
Good article on Perey in New York Times: www.nytimes.com/2014/12/07/ma...
Great source for more info is Musée Curie: musee.curie.fr/public/acjc
Trapping Francium: jqi.umd.edu/news/vive-la-francium
This video features Professor Sir Martyn Poliakoff.
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From the School of Chemistry at The University of Nottingham: bit.ly/NottChem
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Please stop faking Francium explosions, we dont want professor to lose his amazing hair.
Professor Poliakoff would not be as endearing as he is, if he were to lose his hair. However, let's imagine him with dreadlocks.
Why would he do that, lol.
The videos looked like the test footage for test they did with nuclear explosives. At least the first one idk about the other ones
If you were to somehow drop a block of Francium into a large body of water, the EPA would soon pay you a visit.
Knight Wing There are other countries in addition to the USA.
Don't tear your magnificent hair out Prof please.
Came down here to say that :-)
Me too!
It’s alright, it’ll grow back in days.
Baha Ibrahim years*
His hair is SOOOOO CREEPY
7:39 "Cats, the furry animal"
Thanks for that clarification professor. I was struggling to remember what a cat was ;)
Not to be confused with the mobile and heavy machine manufacturer CAT. :)
That sounds serious. You may need to have a Cat scan!
Scientific rigour
CATIUM
biology
I love how everyone else spots fake francium explosion videos by saying "you couldn't synthesize enough francium in a short enough time to have a lump of it to throw in the water" but the professor spots the fakeness by saying "actually, it's less reactive than caesium, so that big explosion isn't caused by francium. however, let's study the chemistry of that explosion"
That part about the relativistic effects on the electrons is the most mind-bending part of the whole video!
How so?
thought the same
This just means that probabilistic orbitals can happen if the Electron moves at or slower than light speed, but relativistic orbitals would require the electron to move /faster/ than light speed.
I love how a big part of Chemistry studies is to learn about Chemistry history.
Physicists get criticized for teaching the history of physics rather than the current accepted model. At the same time, students always ask, "Why/how do we know that?" or "Why is this (physics) needed?"
It's refreshing to hear someone who's interested in the history of science, as it truly informs where we are to know the history of stumbles and successes along the way, and that we are not at the end of the story.
Im studying chemistry and i cant confirm that we learn a lot about history. Sure, our professors throw in an anecdote here and there, but we are tought hardly anything about the history. (At least thats the case here in germany)
You look like Michael from Vsauce.
I think in any science (or even any sort of study in any field) it's important to understand the history so we know why and how the predecessors of a particular field thought. Anything from chemistry or animation and film. Even history, it's important to know how history has been recorded throughout the ages.
Yeah yeah like the development of the atomic theory is very interesting
Don't tear your hair!
Indeed, he would lose his science powers!
I'm gonna take some of his hair and sell it on Amazon.
Anything but the hair!
As a fellow Dr. & researcher I love watching Prof. Sir Poliakoff's enthusiasm even after doing research for 45-55 years. It just goes to show why us scientists do the work we do : Passion.
We may not get paid the wage of a modern day roofer or electrician but we do it because we love doing it.!!!!!!!!!!!
Oh boy! I love periodic videos. Its more than 3 years now. These guys have encouraged me a lot.
Watching the proffesor in the first seconds as he begins to tell a long long way too long story about science is endlessly amazing, and once and there we get to see the other members mostly neil he is so cool, and the other funny guy
I’ve been here since 2008
I do enjoy Sam's videos. She makes it interesting
It's always a pleasure to listen to prof.poliokoff. He's truely an amazing scientist 😊🔬👌👌🎊
yes
Are you telling me we missed out on the name Alabamium?
For a fairly short time the element was named Alabamine by analogy with iodine, bromine, chlorine etc. It appears as such in an old encyclopaedia I had as a child (early 1950's). Presumably the name was dropped when the research was found to be faulty and it's now called Astatine. I wonder what francium astatide is like. Like caesium iodide only more so.
The only thing a hayseed from Alabama ever discovered was that sleeping with sheep was possible.
@@Statickification lol
Well, as it is, it is indirectly named after an upwardly mobile barbarian tribe.
Isn't that what you get when a proton and an electron both decayed from the same parent atom procreate?
Many elements in the periodic table were named after their discoverers' respective geographic nationalities, either by continent (europium, americium), country (gallium, germanium, ruthenium) or city (hafnium, holmium, lutetium). And in most cases, they happen to be sovereign entities. Marguerite Perey's mentor Marie Curie named one of her discovered elements _polonium_ in 1898 after her native country Poland, which at the time had been wiped off the map for over a century by neighboring empires. Luckily, Marie lived to see Poland come back after the First World War. Perey, on the other hand, had to live through a second World War which not only subdued Poland again but also overtook her native France. It seems thus fitting that in 1946, a year after France was liberated, she would name this new (albeit ephemeral) element _francium._
City superheavy element: Livermorium
and sometimes after universities and cities at the same time (berkelium)
If i had a professor like him in high school i would have probably being more interested in chemistry . I love your videos, learning lots of stuff.
I agree. My high school chemistry teacher projected all the enthusiasm of a snail on a cold day. I would later develop an interest as, who can resist “the study of matter and its (sometimes rather thrilling and fulminating) transformations”? 😄😄☠️🔥💥
You would still have to do all the boring mandatory highschool chemistry stuff. Like balancing equations, significant figures, heat system equations, etc...
Professor Walter White anyone...?
Your both just more intrested now, I gurentee your teacher was passionate about science. Working in a school grinds you down and it’s just a job, but to the kids who share the passion when they are at school see a lot more of there teachers passion when they ask questions farther than just turning off, after years of the latter teachers turn of to, lest they end up hating there job lol
Agree. My chemistry memories from high school extend to setting magnesium on fire. After that I have nothing. Sad really. It should have been exciting given the potential.
I've studied a lot of relativity as a physics student, but the fact that relativity affects the reactivity of Francium is seriously mind blowing. I can't believe I never knew about that!! These videos are gems.
I love these videos. I'm learning Chemistry from the very beginning right now. The stories surrounding the elements and expirements shown really help keeping my mind focused in this realm. Thank you!
"except something psychological in his mind"
OHHHHHHHHHHH SHOTS FIRED! SHOTS FIRED!
your hair is just getting more epic
Honestly I never knew that’s what people meant by ‘relativistic effects’ when talking about atoms. Thanks this is genuinely amazing. The story of it is incredible as well.
This videos make me so happy. It's so cool to see how much there is to know about each and every element.
Another very interesting story! I really like, that the old videos are reuploaded :)
+Random Experiments International this isn't a "re-upload" as such, it's a new video "replacing" our older and shorter ones on Francium.
I prefer Catium, I’m pretty sure Schrödinger will back me up on that.
Green Silver or not, maybe...
The first element which is decayed and not decayed at the same time :D
He may or may not, hard to say without checking
it's Catgen not catium
Thousands of cats would agree, I'm sure.
Thank you so much for this video! Its wonderful to hear the professor teaching us. Best regards from Portugal 😊
Sir, I could listen to you for hours.
Much respect from Galveston, Texas
Your french accent for the names is excellent professor! Keep it up! Amazing as always!
Yep! I remember 4 years ago I watched all those fake videos, glad you made another Francium video. Been here since 2008! Best RUclips channel ever!!
I wanna be a organic chemist when I'm older or a pastry chef but I'm leaning more on wanting to be a organic chemist
A new video at last!! Thanks, Brady and Prof. Martyn.
Pagol 1 bro 👊 👊👊👊👊👊👊👊👊
And if you'd like to see what a Francium explosion looks like, just look at the prof's hair.
9ff70f96 lol totally correct
You can tell he is a chemist by that hair lol. That is the hair of many trial and error chemical reactions
These videos are supremely brilliant! If your not doing chemistry/science you'll want to do it now!
Obviously this element was named before cats were held in higher regard than France.
I.e - today
*francine
I've been waiting for this video do such a long time.
Don't tear out your hair. That hair is amazing.
Finally a new periodic video!!! :D Please do more :D
One of my favorite Periodic Videos . Thank you.
The history behind all of the synthetically prepared elements is absolutely fascinating!
That was a very informative video. Best I've seen on Fr on RUclips!
What a wonderful video. Thank you. I wish you had been my chemistry teacher.
I love all your videos! Thank you Professor
Professor...please don't tear out your magnificent, beautiful, prodigious fluff of hair.
And it's my Birthday! What a great present!!! Thanks very much : )
andycapo123 Happy Birthday!
1-15-15-39 5-77-90-105-39!
"Catium" choice for the element's name could made it meme af in 2007
I'm very happy to see a new video
Amazing resource! My science paper is going to blow my teacher away. Thank you so much
Fascinating, professor. With all respect, I LOVE YOU!!!
Now I want a video of the professor explaining that process.
Thank you so much , this is my favorite channel
Thank you for this video. I loved every second of it
Sir, you are an amazing treasure to all people! I am an American and have never been abroad and the only reason I would do so would be the possibility of meeting you! All the best to you and your family!
Thanks for sharing! Love your videos!
I did the math on it once. A gram of Francium-223 puts out about 260,000 watts from its radioactive decay, so it would explode pretty violently even if you didn't put it in water.
Interesting about the phenomena of the valence electrons on Francium holding tighter than on Cesium, I would never have thought about the speed of light being a factor.
Happy to see you in good health, Professor :)
This channel has probably taught more chemistry to more people than the combined public education systems of the western world.
probably
Not for me
If you think that you're just a bad student
No, the only reason these videos are popular is because of the western education systems.
This isn’t knowledge you can use in chemistry though. You need to learn the basics first.
Brilliant deduction. Kudos!
OMG, what calibre of research assistants were back then! Could you get an assistant to perform these sorts of experiments to day? I doubt it. Certainly none of the labs I'e worked in had such assistants LOL- especially ones without a degree.
Great story nicely told, Thanks
hi i am french and i love your videos and i think that your prononciation is pretty fun
It's great that in a chemistry video I'm learning about the speed of light and relativity.
What an interesting story. Thank a lot for the upload!
YAY new Periodic Video!
Thanks from Russia! Your videos are very amazing! I did not find another chemical videos with history of chemistry in Russia RUclips.
It is very important information for students who love chemistry. Thank you again!!!
Others possible names for Francium could be Pussium or Kittyum or Meowioum
this is a delightful video. Thank you.
There's something wonderful about a person trained to study data and numbers and facts who chooses to tell a story about a person. Science is not the only way to study our universe.
Excellent video! Will you be making one for the new Nobel prize? I would love to hear the Prof. talk about it!
Cleared up my inquires. Thanks
Correction: The electrons of francium aren't heavier, but have more more momentum because they are moving close to the speed of light, and their apparent weight is larger.
I love hearing about the historical background!! :D
I like how he gets straight to the point
I really like the alkali metals, probably my favorite group on the periodic table. So ive always wondered, does cesium alloy with the other alkali metals in the same way sodium does with potassium? Also could you alloy all of the avalable alkali metals together.
I ask because i know that potasium sodium alloy is more reactive than either of the metals alone. This is my favorite channel on youtube and i would love to see a video with some experiments playing with the possibilities of the alkali alloys.
Thank you for your videos. I've started a Bch.Science & find this so exciting. Modern day Magic !!!
Kudos to the professor for the quality of his French pronunciation.
I love you guys staying safe I hope.
So can we get an element named after him?
Nessuno Anon Martynium
Poliakogen
Well, it would be the 3rd exception - an element named after a still living person.
Profesorium
Poliakoffium/Poliakoffine!!!
And also the mass of the alkali metal needs to be inculuded. A gram of francium would have way less atoms than the other alkali metals. So the reaction of the same mass will produce a way less big explosion.
very nice upload!
Taking periodic trends into account says that Francium should be liquid at STP
But since Francium is so heavy relativistic effects might change that
Atropos plus the high radioactivity would cause a lot of heat
Francium-the only element that runs BEFORE it’s poured.
"He was not measuring anything, except something psychological in his mind" Ouch professor :)
Your french pronunciation is on point ! 👌
so much enthusiasm than i ever had.
Professor, you're forgetting Francium's remarkable radioactivity.If I had an ampule of the stuff the sheer energy it gave out would make the stuff low.I think THAT would make its reaction with water considerably more impressive. Heck it'd make even a sample in a sealed vial interesting and exceptionally dangerous.
I was listening to this doing my homework for Chemistry, and I heard him wanting to tear his hair out, I had to turn and look...
I appreciate the content of this video and the work of the people who made the mentioned discoveries. I'd only wish that ppl say the full name: Marie Curie-Sklodowska. She had Polish roots and I think it's only OK to say her double surname fully. :) Keep on the good work with Periodic Table of Videos.
1:31 - The professor throwin' a little shade, there? LOL
I wondered whether the makers of the fake Francium videos did do with the hope of seeing Professor P tearing his hair out! It would be quite a spectacle! Thank you guys so much for a wonderful series of videos.
Catium?
Schrödinger : I say I like it like that !
Best channel ever
Critical fumble not calling it catium. A great counsel must be convened in order to rectify this situation. Also, they should call it the aCATemy of science instead of academy.
What is the melting point of francium? That has a large bearing on the violence of the reaction with water. For example, lithium reacts slowly with water, because its melting point is 165C, so the water cools it, and it remains a solid. Sodium/potassium/rubidium/cesium all have melting points well below 100C so they liquefy and disperse in water, speeding the reaction.
Marvelous story!
After watching this video I finally understood what a cat is. I was really confused by the meaning of the world and I couldn't even identify the animal the name belongs to. Now I finally feel enlightened.
J/K this videos are awesome, I just found that clarification really amusing and funny ;).
I love your channel and I would just like to ask if this channel has been experiencing the effects of the Adpocalypse?
Has your tie got the periodic table on it? Because if you do then that’s just brilliant.
Love this!
How is naming an element after CATS a bad thing?!?!
Nathan Jessep it was before RUclips! Now we could have kittium, purrium, lapium. .. but I'd stop short of lickyourownarsium.
It would have been a purrfect name
Nathan Jessep it is.
Nathan Jessep It would destroy the chemical name pattern, plus, What symbols would these cat-related elements have? How would scientists name other elements? When will it stop?
Does this have anything to do with your profile picture?
What an amazing story!
Will you do a video about the new found molecule Na2He?
Hey guys can you make a video on the reaction of aluminium and mercury. Love the channel.
Should do a video on the radium factories and the effects on the workers that were exposed to it