Question

Which choice is expected to form (a) the strongest and (b) the weakest ionic bond (choices listed as strongest/weakest)?
Sr2+ & O2–/Ca2+ & Cl–
Cs+ & Cl–/Sr2+ & Br–
Na+ & Cl–/Cs+ & Br–
Ca2+ & O2–/Sr2+ & Cl–
Ca2+ & O2–/Cs+ & Br–

Answer 1

for each pair or for the entire thing?

Answer 2

The pair before the slant would be the strongest ionic bond and the pair after the slant would be the weakest

Answer 3

pretty sure you could compare electronegativity differences. the farther the two elements are apart on the periodic table the more likely they are going to have a stronger ionic bond, I guess.

Answer 4

Okay so Ca 2+ and O 2- are the stronger ones according to the answer so that makes sense.

Answer 5

How can you tell for the weaker bonds

Answer 6

You can actually look the atoms up and you would subtract their electronegavity values to and i'm guessing that the larger electronegativity value would mean a stronger ionic bond i guess.

For A.

Sr = 0.95 O 3.44 3.44-0.95 = 2.49



Ca = 1 Cl 3.16 3.16-1 = 2.16

The Sr2+ O2 bond would have more ionic character 2.49 than Ca^2+ Cl- 2.16

Answer 7

Thank you @Photon336

Answer 8

no problem