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Beryllium, magnesium and calcium all are located in the alkaline earth group. Which of these characteristics do these elements have in common? A) They each have similar densities. B) They each have a similar melting point. C) They each form similar compounds when combined with oxygen. D) They each have their valence electrons in the same energy level.

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Its (C) I guessed it and got it wrong just so I can give the answer away.

aachen

The alkaline earth metals have two electrons in their outermost shell which they lose to form cations.

  • The given alkaline metals Beryllium, calcium, and magnesium have their valance electrons at different energy levels and have different densities.
  • Moreover, the melting points of each of these metals are different from each other.

However, all these three metals form similar compounds when they react with molecular oxygen. Hence, the correct answer is option c.

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