Q. Which pair of atoms has the highest electronegativity difference? (Calcium's electronegativity is 1.0 Fluorine's electronegativity is 4.0 Hydrogen's electronegativity is 2.2 Sodium's electronegativity is 0.93)
A) Ca-F
B) F-F
C) Na-F
D) H-F
✔ Correct Answer: Na-F
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