Multiple choice

Using periodic table, which group of elements would be expected to have similar properties?

  1. O, S, Se

  2. Na, Mg, K

  3. N, O, F

  4. Ne, Na, K

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A Correct answer
Explanation

Elements in the same vertical column (group) of the periodic table share similar chemical properties because they have the same number of valence electrons. Oxygen (O), sulfur (S), and selenium (Se) all belong to Group 16, meaning they behave similarly in chemical reactions.