In a period electronegativity from left to right_________________?
Correct answer: A. Increases
- A. Increases
- B. Decreases
- C. Remain constant
- D. Variable trend
Explanation
Electronegativity generally increases from left to right across a period because nuclear charge increases while shielding changes little, so atoms attract bonding electrons more strongly. The atomic radius also generally decreases across the period, reinforcing this attraction. The likely mistake is choosing d because of small exceptions, but the broad periodic trend is an increase.
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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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