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Considering the elements B, Al, Mg, and ...

Considering the elements B, Al, Mg, and K, the correct order of their metallic character is :

A

BltAlltMgltK

B

BltMgltAlltK

C

MgltBltAlltK

D

MgltAlltBltk

Text Solution

Verified by Experts

The correct Answer is:
A
(A) Electronegativity decreases and hence the metallic character increases with in a group from top to bottom (i.e., Al is more metallic than B). Further electronegativity increases and hence the metallic character decreases from left to right along a period (i.e, metallic character decreases in the order : KgtMggtAl). Thus the overall metallic character of four elements increases in the order BltAlltMg ltK
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