Magnesium (Mg) has an atomic number of 12. What is the ground-state electron configuration of magnesium?

A. 1s21p62s22p2

B. 1s21p61d4

C. 1s22s22p63s2

D. 1s22s22p62d2

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Suppose the carbon and oxygen react according to the equation: o2 + 2c = 2co. if you started with sixty oxygen molecules (60o2) and sixty carbon (60c), how many carbon monoxide molecules could you make?

Which of the following does a simple circuit require? A. an energy source, a resistor, and a capacitor B. a load, a conductor, and a resistor C. a load, a resistor, and a capacitor D. an energy source, a load, and a conductor

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Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.