1.

Upon reaction of O₂ with metals of Period 3 elements, ionic bonds are formed if the

A. electronegativity of Period 3 elements is more then 0.5
B. electronegativity of Period 3 elements is above 3.5
C. electronegativity of Period 3 elements is lower than 1.7
D. higher the difference in electronegativity of O₂ and Period 3 elements.
Answer» E.


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