Moscovium – Periodic Table of Videos

published on July 17, 2020

Delegate rosea now can yet verbally Nasrani Elementor stupid nuts in oven as Vanya Moscow Liam dear friends they've finally chosen the name for element 115 and the name is Mosco Veeam or perhaps with a Russian accent Muscovy 'm the reason they had

Chosen a Russian name is because the element was synthesized for the first time in Dubna somewhere to the north of Moscow Du Bois is the big Research Centre where elements synthesis has been studied for the last 30 or more years

Originally under the leadership of Florio after whom flerovium was named quite recently as with the other elements the way that you make these elements is by accelerating very light iron at very high speed into a heavy

Element and the nuclei fused together now the problem is that both nuclei are positively charged so you need a lot of energy to overcome the repulsion positive against positive but then once it's made you don't want too much energy

It will immediately fall to bits it's a bit like trying to jump from the ground onto the top of a flagpole you might get there but then over balance straight away and fall off again to do this it's not just enough to choose the right

Atomic numbers but you have to choose the right isotope that's the atoms with the correct number of protons and neutrons so that in combination you get a stable number it's really important to understand that calcium 48 is a very

Rare isotope of calcium less than 01% of naturally occurring calcium and it's very expensive to produce and there is only one plant in the whole of Russia one plant in the whole world that can make calcium 48 they ionized the calcium

Atoms and then separate them magnetically as in a mass spectrometer so you need huge amounts of electricity to produce a few milligrams of the compound and apparently in one experiment in

Dubna they used a million dollars worth of calcium 48 in these experiments you're bombarding the target americium with trillions of calcium ions and only very rarely does the correct fusion take place and you make one of the nuclei of

Element 115 very fortunately when you are successful the element comes out to the back almost in the straight line whereas when it blows up fragments and something else the fragments go in all directions so if you put a very narrow

Slit behind your target you can get not just element 115 but the subset of fragments that contains that and most of the junk goes away Muscovy 'm is in group 15 that's the group that begins with nitrogen and then phosphorus and

What is interesting about this group is that it includes arsenic which is very poisonous used to be used by poisoners to kill their wives or husbands but now as you go down the group you come to bismuth the element immediately above

Muscovy 'm bismuth is surprisingly UNPO zenus it's even used in medicines so it's a very interesting question if you had a large quantity of Muscovy 'm would it be poisonous or did not it's also interesting to think whether the

Chemistry would be similar to that of phosphorus arsenic and bismuth or whether like bismuth it would be almost like a metal you can get for example phosphorus pentachloride pf5 arsenic pentafluoride but you don't get these

Pentafluoride of bismuth or at least you don't get them so easily so there'd be a lot of interesting chemistry but unfortunately the technology so far will not allow you to do that sort of chemistry Moscow is

One of my favorite cities and so obviously I'm delighted Moscow viim is one of the few elements named after a capital city and most of the others are not easily recognizable because for example lutetium is named

After Paris but it's a Latin name that unless you know doesn't seem to relate to Paris at all so I think it's a very good name as I mentioned before Scottish viewers will like it because it has a symbol MC and many Scottish surnames

Begin with MC so they're going to be a lot of people in Scotland who can now spell their name with the elements of the periodic table making Muscovy 'm has been a fantastic piece of international collaboration because although the

Experiments were done in Russia they relied on having samples of americium which were made in America these are very specialist experiments where you need a particular facility that can make the isotope that you want

We're talking about the starting material of milligrams or less so even if the process was very efficient you would only get milligrams of the elements and because of the low probability forming them we're talking

About really quite small numbers of atoms being formed and in this paper which is about the sensitive the heavy elements they're giving the numbers of the atoms of these different elements 100 and 1870 and so on so 415 the

Highest number that any lab has seen that's in Dubna is 27 atoms of a particular isotope just to make that clear in my tea cup there are probably 10 to the 26 or 10 to the 27 atoms it is really almost incalculable that you can

Start costing up this element atom by atom and each atom probably if you take in all the costs will cost millions of dollars whereas with gold for millions of dollars you can get several kilos but for here you've got one atom and it

Doesn't last very long so it's the Samet gift to give to somebody you might just have enough time say I love you before the atom decays it's a million-dollar item yes we already have an element named after Dubner dubnium is

It overkill you know now having moscovia more they are they hogging all the names I think it's fair enough you have to bear in mind that there are some places that have at least four elements named after them particularly it'll be the

Small island near Stockholm and the Californian boo helium lawrencium and livermorium are all in California so I don't think it's unreasonable in my pocket I've got this and this is a real Nobel Prize medal it's a real Nobel

Prize medal made of gold it's the medal that was won by my colleague at the Royal Society to pull nurse the president and I borrowed it for this lecture

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