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There are two valence electrons in a He atom. What is the average ionization energy of the two valence electrons in He

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hamdankhoori93

Answer:

A: Calcium is a group 2 element with two valence electrons. Therefore, it is very reactive and gives up electrons in chemical reactions. It is likely to react with an element with six valence electrons that “wants” to gain two electrons. This would be an element in group 6, such as oxygen.

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