Answer :

B has higher metallic character

Metallic character goes on decreasing across a period because:


i. As we move from left to right, nuclear charge increases with increase in atomic number. This increase the force of attraction of electrons by the nucleus.


ii. As a result, the tendency of losing electrons goes on decreasing.


iii. Therefore, metallic character decreases within a period.


Thus, B has higher metallic character.


Note: More easily an element loses electrons, higher will be its metallic character (electropositive character)


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