Describe, in terms of electrons, what happens when a magnesium atom reacts with chlorine atoms to produce magnesium chloride?

Electrons move from the magnesium atoms to the chlorine atoms.

Explanation:

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.