Which of the following set of elements is written in order of their increasing metallic character?
A
Be, Mg, Ca
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B
Na, Li, K
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C
Mg, Al, Si
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D
C, O, N
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Solution
The correct option is B Be, Mg, Ca These elements are in same group but Be is at the top, while Ca is at bottom. Metallic character increases as we move down the group.