Bond will beionic when E.N difference of bonded atom is ____________________?
Correct answer: B. Greater than 1.7
- A. Equal to 1.7
- B. Greater than 1.7
- C. Less than 1.7
- D. No specificity exists
Explanation
In the usual electronegativity-difference guideline, a difference greater than 1.7 indicates predominantly ionic bonding because electron transfer is strongly favored. The value 1.7 itself is often treated as the upper boundary of polar covalent bonding in this simplified rule. The likely mistake is choosing a by treating the boundary value as ionic, rather than using greater than 1.7.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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