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Question
Considering the elements B, Al, Mg, and K, the correct order of their metallic character is ______.
Options
B > Al > Mg > K
Al > Mg > B > K
Mg > Al > K > B
K > Mg > Al > B
Solution
K > Mg > Al > B
Explanation:
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 a group. Thus, the metallic character of Al is more than that of B.
Considering the above statements, we get K > Mg.
Hence, the correct order of metallic character is K > Mg > Al > B.
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