[Music] hey you guys this is Mr millings and today we're going to learn about type one binary ionic compounds we're going to learn how to name them and we're going to learn how to write the chemical formulas for them so what is a type one binary ionic compound well let's break this down here people first of all we learned in an earlier video that a compound is two or more different elements chemically bonded together and what does it mean to be ionic well anytime you're ionic you're going to have a Al bonded to a non-metal okay so we have a compound one of which is a metal and one of which is a non-metal and the fact that it's binary the prefix by just means two so we have a compound that consists of two different elements and the fact that it's type one right here means that the metal comes from either groups one or two and is either silver zinc or aluminum so anytime you have a metal that comes from groups one or two and is either silver zinc or aluminum and it's bonded to a non-metal this is going to be a type 1 binary ionic compound so let's take a look at a couple of examples if we take a look at this example here lithium chloride is a type one binary ionic compound why because we have a metal and we have a non-metal right we only have two different elements here lithium and chlorine one of them is a metal and one of them is a non-metal and specifically this metal here comes from group one okay so anytime you have a metal coming from group one or two and is either silver zinc or aluminum and it's bonded to a non-metal it's going to be a type one binary ionic compound same with calcium nitride okay calcium comes from group two on the periodic table it's bonded to nitrogen which is a non-metal and so bam you end up with a type one binary ionic compound and in this video we're going to learn how to name type 1 binary ionic compounds and we're going to learn how to write the chemical formulas for type 1 binary ionic compounds so let's Jump Right In with a few example problems all right so let's learn how to name type one binary ionic compound so what if you're given the chemical formulas for a binary or specifically a type one binary ionic compound first of all how can we tell that all of these chemical formulas here represent type one binary ionic compounds well we can tell first of all because we have a metal bonded to a non-metal and every single one of these right in every single one of these we have a metal bonded to a non-metal and keep in mind that the most electronegative element gets listed first and so this is why be comes before F and so we have a metal Bond into a nonmetal metal Bond into a non-metal same thing here same thing here same thing here and specifically the metal that we're looking at comes from groups one or two and is either silver zinc or aluminum so we have a type one binary ionic compound here and when we name these it's pretty simple it says right here that when naming a type 1 binary ionic compound simply name the metal followed by the non-metal with an IDE ending for example the metal here is called burum right it's buril and it's bonded to a Florine atom well well when we're naming this in a type 1 binary ionic compound we drop the in and add an IDE suffix so this right here becomes burum fluoride this right here would become sodium chloride this right here would become zinc bromide this right here would become lithium oxide this becomes magnesium sulfide and this is calcium phosphide okay so the first thing you have to do is first be able to determine what type of compound it is we're going to learn about type one type two type three uh compounds and so you first need to be able to determine that this is a type one binary ionic compound and follow follow the rules for naming these compounds that you see right here and you should get it right every single time but what if we're working the other way what if you are given the name and you're asked to write the chemical formula well let's take a look at that all right so what if you're given the name of a type 1 binary ionic compound and you're asked to write the chemical formulas so for example we are given the name sodium bromide but we want to write the correct chemical formula here how does that work well it says right here when writing the chemical formulas for type one binary ionic compounds we're going to have to add subscripts to each atom in the compound so that the ionic charges of the two different atoms adds up to zero so whenever we have a metal bonded to a non-metal the ionic charges always must add up to zero and that's an important concept and so what we have to do is we have to add subscripts to to the elements in our chemical formula to get those ionic charges to add up to zero for example sodium we know comes from group one on our periodic table of elements so all those have a positive one charge bromine or bromide comes from group 17 and has a negative one charge so if we take a look we have a positive one charge here and a negative one charge here these two charges add up to zero plus one and minus one add up to zero and so we don't need to add any subscripts here and so our chemical formula for sodium ride is just going to be n let's take a look at this one if we take a look rubidium the chemical symbol is RB and the ion forms positive one ions because it comes from group one on the periodic table sulfide comes from group 16 and so it forms -2 or two minus ions uh and so if we take a look here this charge and this charge do not add up to zero plus one and minus two do not add up to zero but if we have another rubidium ion here plus one and plus 1 is now going to add up to plus two and this plus two charge is now going to cancel out the negative charge over here so how do we show that there's two rubidium in a chemical formula we do that by writing a subscript that we see right here of two okay so the correct chemical formula here will be rb2 and just one little sulfide so rb2s will be the correct chemical formula if we take a look right here magnesium nitride we know magnesium forms positive2 ions or two plus ions and we know nitride is n minus 3 these two charges don't add up to zero so it looks like if you have three of these the total charge will be plus six and if you have two of these the total charge will be minus 6 and they add up to zero and so that's why we get mg3 N2 all right and that's why we get uh silver phosphide being ag3p here because silver you're going to have to have three of these all containing a plus one charge and you're going to have phosphide which is a neg -3 the plus 3s and the negative neg3 ends up adding up to zero and so we have ag3p here so let's take a look at a few examples and see if you can get some of these correct so when you write the chemical formulas you're going to need a periodic table so we have one right here we have to write the correct chemical formula for sodium chloride we know sodium is a positive one ion and we know chloride is a negative 1 ion these two charges add up to zero already so you don't need to add any subscripts the correct chemical formula is going to be NAC let's take a look at another example in this example here we're asked to write the correct chemical formula for calcium fluoride calcium comes from group two on our periodic table and all these form positive2 ions so calcium is plus two and then we have fluoride over here all these halogens here they form negative-1 ions and so here we go these two charges do not add up to zero but if we have a second fluoride then the total charge here will be Nega -2 on the right hand side and the total charge here will be plus two so what will our chemical formula be it's going to be caf2 right there's two fluorides indicated or represented by the subscript of two right there so caf2 is the correct chemical formula for calcium fluoride let's take a look at another one okay so let's write the correct chemical formula for brillium fluoride we know burum is in group two on our periodic table and it forms positive2 ions if we take a look we see that uh phosphide is in group 15 on the periodic table and these guys typically form neg -3 ions right and so if we take a look the lowest common multiple of two and three is going to be six so how do I get this to be a positive six and how do I get this to be a negative 6 I'm going to need three of these I'm going to need three burum and I'm going to need two phosphides right so if we take a look now the total charge here is plus six the total charge here is Nega -6 these add up to zero so we end up with be3 P2 as our correct chemical formula here let's take a look at another example right in this example we're asked to name this compound right here we can see cesium comes from group uh group one on the periodic table and it's bonded to a non-metal right so we know this is a type one binary ionic compound because the metal comes from group one and so when we name this this is just going to be cium fluoride cesium fluoride will be the correct correct name for this compound here let's take a look at another one all right if we take a look at this we have to write the name for ca3 P2 once again we have a metal and we have a non-metal here so this is an ionic compound we know that calcium comes from group two on our periodic table so this makes this a type one I binary ionic compound and so when we name this we follow the rule we just call this calcium and then we change the ending of phosphorus to an i ending and we get calcium phosphide okay let's take a look at one more example all right so if we take a look albr3 albr3 the correct name of this is going to be aluminum bromide aluminum bromide right aluminum is a type one metal it only forms positive three ions so it's a type 1 metal it's bonded to a non-metal so we name the metal aluminum we change the ending to ey and we get aluminum bromide so now that we worked through some example problems try these what I would do right now is pause this little video and try to fill this table in okay try to uh figure out the chemical formula for sodium phosphide try to figure out the name of this little compound right here try to write the chemical formula for strontium fluoride pause this little video take about five minutes to try these on your own and I'm going to give you the answers right about now so here are the answers how did you do hopefully you got them all correctly you got 100% if you like what you see go ahead and click that little bomb in the bottom right hand corner that will subscribe you to my channel and feel free to leave any comments or questions in the comments section down below and I hope you guys found this helpful