i would like to know which of these are polar covalent,nonpolar covalent and ionic?

Question

NaCL
NaI
CaO
AIP
MgO
MgS
LiF

NaCl = Polar ionic
NaI = ??
CaO = Polar covalent
AIP =???
MgO = Polar ionic
MgS =???
LiF = Polar ionic

NaCL =Polar ionic
NaI = ???
CaO = Polar covalent
AIP = Nonpolar covalent
MgS = Polar covalent
LiF = Polar ionic

THANKs for the help

what it the answer for.... Nal.......

Answer 1

Lancenigo di Villorba (TV), Italy

I send to you my answer.
I proceed as follows :
-) I consult values of Pauling's electronegativity's for the chemical elements involved;
-) I estimate gap's values between chemical element involved in any chemical compound;
-) I consult other text-books on water's solubilities of assigned compounds.
The latter informations interest one very polar solvent (e.g. water), so I estimate polarity of compound and compare this information with prevision fournished by gap's electronegativity.
The solubility's data are more sure.

POLAR COVALENT
I think MgS (e.g. magnesium's sulphide) belongs to this class.

NON-POLAR COVALENT
I think AlP (e.g. aluminium's phosphide) belongs to this class.

IONIC
I think all the remainings belong to this class.

I hope this helps you.

Answer 2

Hint:
1. Look up the electronegativities of each element in the compound. (If you have cracked open your GenChem book once or twice, you know where that is by now).

2. Take the difference between the two electronegativities (of the atoms involved in the bond in question.)

3. The bigger the number, the more ionic character the bond has.

Can ya do that? Good. Now go do your homework.

Answer 3

Compounds in which strong electropositive metals(Na,Ca,Mg,Li) are bonded with strong electronegative nonmetals(Cl,O,F) are of ionic nature.Covalency should have involved sharing of electrons whereas polar covalent is when the electronegativity difference is not so big(slightly small).

Answer 4

All of them contain a metal, and they all join with another non-metal, so they are ALL IONIC.

Answer 5

they're all ionic and therefore also polar.

Answer 6

They are all ionic.