Which of the following pairs of atoms would you expect to combine chemically to form an ionic compound?

Question

Which of the following pairs of atoms would you expect to combine chemically to form an ionic compound?

a. Li and S
b. O and S
c. Al and O
d. F and Cl
e. I and K
f. H and N

Can you explain this to me? I'm having trouble understanding it!! Thanks so much!

Answer 1

Hi..
Ionic bonding is usually a metal combining with a non-metal.
So..
a. Li and S would combine, Li is metal, S (sulphur) is not
b. O and S would not, both non-metals
c. Al and O would combine, to form Al(2)O(3)
d. F and Cl would not, both non-metals
e. I and K would combine, K (potassium) is metal, I (iodine) is non-metal
f. H and N would not combine, both non-metals

Hope this helps.
=]

Answer 2

a. Li and S Metal & Non-metal
b. O and S Non-metal and Nonmetal
c. Al and O Metal and Nonmetal
d. F and Cl Non-metal and Nonmetal
e. I and K Nonmetal and Metal
f. H and N Non-metal and Nonmetal

So A, C, and E

Answer 3

a), c) and e). Look at the PT. The further away from each other atoms are , the more ionic the bond.

Answer 4

a., c., and e.

These are pairs of metal + nonmetal in different parts of the periodic table, which would be expected to accept/donate electrons rather than share.