Which of the following set of elements is written in order of their increasing metallic character?
  1. Na Li K
  2. C O N
  3. Mg Al Si
  4. Be Mg Ca

Correct Answer: (d) Be Mg Ca

Explanation: Metallic character increases down a group and decreases along a period. Thus, metallic character increases in the order Be, Mg, Ca as they belong to the same group.


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