Answer :
Final answer:
Elements in the same group share similar chemical properties due to their valence electrons.
Explanation:
Elements in the same group exhibit similar chemical properties due to having the same number of valence electrons. For example, magnesium, an alkaline earth metal with two valence electrons, is chemically similar to beryllium. Therefore, the element with chemical properties similar to magnesium is barium, another alkaline earth metal.
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