Write the correct formula for the ionic compound composed of the following pairs of ions.
1)Potassium and iodide
2)Magnesium and chloride
3)Aluminum and bromide
4)Cesium and nitride
5)Barium and sulfide
6)sodium and nitrate
7)Calcium and chlorate
8)aluminum and carbonate
9)potassium and chronate
10)magnesium and carbonate
II. Name the following compounds
1)NaBr
2)Cu(NO3)2
3)CaCl2
4)KOH
5)Ag2CrO4
Like you dont have to do everything, do what you know no pressure.
I dont get this stuff the teacher never tought us how to do it so. .
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first let me start with saying that the purpose of the atoms bonding is to make a more stable compound, so the nonmetals will take electrons to fill their valence electrons (an atom is most stable when it has 8 outer electrons) so
okay so im not going to do them all for you but ill show you how to do the first 3 so you can do the rest.
so what it comes down to is if the atoms are electron givers (metals) or electron takers (nonmetals), you need to look at what column the ions (atoms) are in, so potassium is in the 1st column and it is a metal so it is an electron giver, the column tells you how many valence electrons it has (so in this case, its in column 1 so it has one electron to give because metals are electron givers) and remember it is trying to make the most stable compound possible so it will need to give its electron to one that has 7 electrons so it will total 8 valence electrons and have its outer energy level full for the most stability
so now that you figured out one of your ions you go to the next one which is iodine (the ide ending is just because its an ion) so iodine is in the 7th column and its a nonmetal so it takes electrons, because it is in the 7th column that means it has 7 valence electrons (and remember it’s most stable if it has
and because its a nonmetal it is an electron taker, so what its going to do is it will take the electron from potassium so its more stable, so your compound is K+I- (because k is an electron giver and i is an electron taker)
Now let me say that ionic compounds always need to come out neutral, so for the next one your going to need 2 chlorine atoms for the one magnesium because magnesium has a 2+ charge so it and chlorine only has a 1- so it takes 2 chlorine atoms to cancel out the 2+ so your compound would be Mg2+ 2Cl1- (the 2 in Cl is for the 2 chlorine atoms and the 1- indicates the charge)
ive got to go so im sorry i couldnt help you with the third, i hope i helped, good luck