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Which of the following sets of elements has the same valency?

Options

  1. ANa , Mg , Ca
  2. BNa , Mg , Al
  3. CMg , Ca , K
  4. DMg , Ca , Ba

Correct answer

D. Mg , Ca , Ba

Step-by-step solution

- Valency of Na is 1 - Valency of K is 1 - Valncy of Mg is 2 - Valency of Ca is 2 - Valency of Ba is 2 - Valency of Al is 3

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