SAT Chemistry

Category - Multiple Choice

Which of the following elements is the most electronegative?
  1. Boron
  2. Lithium
  3. Potassium
  4. Oxygen
  5. Cesium
  6. Sodium
  7. Fluorine
Explanation
Answer: Fluorine

This question addresses periodic trends in electronegativity. Electronegativity increases going up a group and across a period from left to right. Therefore, fluorine is the most electronegative element. In fact, fluorine is the most electronegative element in the entire periodic table.
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