Problem: The charges and sizes of the ions in an ionic compound affect the strength of the electrostatic attraction holding that compound together. Based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points.RbFSrF2SrOCsBr

FREE Expert Solution

atomic radius lower lattice energy lower melting point


Ionic Bond Energy = |cation charge · anion charge|cation radius + anion radius


RbF

 Ionic Bond Energy = |+1-1|5+2 = 0.14

SrF2

Ionic Bond Energy = |+2-1|5+2 = 0.29

SrO

Ionic Bond Energy = |+2-2|5+2 = 0.57

CsBr

Ionic Bond Energy = |+1-1|6+4 = 0.10


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Problem Details

The charges and sizes of the ions in an ionic compound affect the strength of the electrostatic attraction holding that compound together. Based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points.

RbF

SrF2

SrO

CsBr


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