Welcome to another tutor sure provided by the Educational Support Services

Department up the high carbon Community College in snacks fell Pennsylvania

which is just outside a valid tell these videos review key learnings for the

science courses provided herein tell Tracy

completion member that the Educational Support Services Department does provide

walk into during five days a week this video review the

basic naming conventions that we use for ion I can call failing compounds in

chemistry

house start at the bottom here

just two to let you know that I E um will review how to deal with transition

metals and I am compounds on the next slide

in this video and that for polyatomic ions in acids I'll have a separate video

that you can look up and use but if we start with basic Diana compounds

how to compounds are a metal in a non-metal

combined together and the naming convention

is the metal is just um

stated its full name and as a second term

you will state the non-metal ru

plus you landed with I D E and I'll show you

the first example a sodium chloride you name the metal

strictly sodium and the non-metal here

is chlorine hand you take the route of chlorine which is Clore celo

Chlo are and added and I D E

risen indeed so its sodium chloride

when you move on to the next example you'll see lithium

sulfide you notice the metal you still just say the

the full metal name lithium you do not have to

address the subscript authors to hmmm

and then for sulfur over here

nonmetals the routers SU LF

and then he had the ides a sulfide and then

the last example I have aluminum oxide again you just

state the metal you don't worry about the subscript

and also here on the Tom non-metal

you do not worry about the subscript you um

you represent an oxygen here this the route is all wax

and edger I D E for aluminum oxide

and Dom so the subscripts

um welcome into name mean hun I am account pounds

that's basically because you can look at the to charges

%uh home-based charges of aluminum in oxygen

you out you know aluminum oxide must be al2o3

see only way it can be formed up so you don't need to show

any representation of the subscripts now we go to

Cole valence there you do home

have to in some way address

the subscripts and so

Kovan its are non metals with another non-metal

to prefix here in green that's how you address the

so serve hmmm subscripts

in the elements so like for down down here in SF's

6 you gonna deal with the 6-foot-2 in some way with a prefix prefix

as to be on either term the first others second

and the the next one down here you'll see a when the two in a 5-4 gonna have

to

deal with those prefix though such scripts

so let's look at our first one nitrogen

oxide we have no: because the subscripts here are both won

hmmm you do not need to use a prefix model

model represents one %uh but if

the Nomad the basic um nomenclature

for cough and a compound you don't need to use

model Hudson if you don't see a term it's implied that its model so

you not the same model nitrogen it's just nitrogen

safety and a second term its oxygen

with the the room with the iDEN date so it's oxide

you don't have to say mono now you will obviously come across some exceptions

are very common one that

yeah I'm sure you'll deal with your science classes see all which is carbon

monoxide

in there they do use um the modern

form on oxide but that's just

%uh a long time use it's not really following the namee

a convention but it's just been you so much

over the years that everybody how uses it that term

now so that is one exception a and there are few others occasionally you may come

across

with the model term so now we look at

the next example we have here um

solve for with 6 Florence

again because sulfurous a single element there

you just use the full term of sulfur

but now on the farm the fluorine

you going to use a prefix hexafluoride represents six

your roof for fluorine is fluo

our floor and then your iDEN deed

salt sulphur hexafluoride in our final example here for Oracle valances

and 2005 here you need to use a prefix a dying nitrogen

and a gurney you sure pentoxide

pentoxide so you're prefix

you wrote when you're heading there suffix if I D

so if we now move over to our

seconds convention here

I wanted to get rid of this their ego

um if we have a transition metal in arianna count pound

transition metals um most of them are some other

can have more than one oxidation state

and so you need to address that in the name me

so for transition metals you you name them that'll

but you also have to give some indication up with the oxidation state

is

you do that with the Roman numeral and then again UN with here

your non-metal routine your ID sonar first example with iron

um chloride I say if Iran chlorine

in this case hired here is hired three witches

FEC plus 23 that's the

%ah oxidation state of iron in this case

so you have hired three Roman numeral 3 here

%uh chloride the route and the ID the suffix

the Nexus sample here CEUs this case

its copper to sulfide

and a copper here represents

its oxidation state is close to you notice in the next example

see you to s--- here the

oxidation state a copper is plus one

it so its copper one sulfide

so by doing the one in the two

you can rip you know where the you have CEUs

for cu2+ s so it's important when you have a

transition metal with multiple oxidation states

that you introduce om this Roman numeral convention

and then again as I mentioned ball have another video here in polyatomic ion

said

in Aus on a min yes it's thank you