The Electronegativity of Hydrogen is _____.
Correct answer: B. 2.2
- A. 2.8
- B. 2.2
- C. 3.1
- D. 1.8Chemistry
Explanation
On the Pauling scale, hydrogen has an electronegativity of about 2.2, reflecting its moderate attraction for shared bonding electrons. Students may choose 2.8 because they confuse hydrogen's value with that of another non-metal or with an ionization-energy value.
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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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