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MDCAT Chemistry QUESTION #7794
Question 1

The electronegativity of Al is approximately equal to that of:

  • B✔️
  • Be
  • Mg
  • Na
Correct Answer Explanation

Electronegativity (Pauling): Al=1.61, B=2.04, Be=1.57, Mg=1.31, Na=0.93. Al is closest to Be but question often says equal to Be. However MDCAT past papers: Al ≈ Be. Given options: B (higher), Be (1.57 vs 1.61 close), Mg lower, Na lower. Best answer: Be.