How does electronegativity change across a period from left to right?
Answer and explanation
Correct answer: A. It increases
- Step 1: The nuclear charge increases while the radius shrinks. Step 2. Atoms attract bonding electrons more strongly. Answer: it increases. Why not the others: Electronegativity increases across a period due to increasing effective nuclear charge and decreasing atomic radius, drawing valence electrons more strongly toward the nucleus.
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