Considering the elements B, Al, Mg, and K, the correct order of their metallic character is: (a) B > Al > Mg > K (b) Al > Mg > B > K (c) Mg > Al > K > B (d) K > Mg > Al > B
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Boron and aluminium belongs to p block elements & are group 13 elements whereas magnesium and potassium belongs to s block elements.
Potassium belongs to group 1 and magnesium belongs to group 2.
The metallic character of elements decreases from left to right across a period.
Thus, the metallic character of Mg is more than that of Al.
The metallic character of elements increases down the group.
Thus, the metallic character of Al is more than that of B.
Hence, we get K > Mg.
Therefore, the correct order of metallic character is K > Mg > Al > B.
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Answer:
The correct order of their metallic character is K > My > Al > B
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