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Science Bowl Question

📅 NSB Round Robin 2009🎓 HS🔄 Round 5#️⃣ Question 15❓ TOSS-UP📝 Multiple Choice

The electronegativity of oxygen is 3.4 and the electronegativity of calcium is 1.0. Which of the following best describes the formation of the calcium oxide:

W) 2 electrons are transferred from calcium to oxygen
X) 2 electrons are transferred from oxygen to calcium
Y) 2 electrons are shared between calcium and oxygen
Z) 1 electron is shared and another is transferred from calcium to oxygen
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