The correct order of increasing metallic character is _

P < Si < Be < Mg < Na

P < Si < Mg < Na < Be

Na < Mg < Be < Si < P

P < Si < Na < Be < Mg

Metallic character shows the ability of an atom to release the electrons from its outer most shell.
The metallic character decreases across a period from left to right of periodic table.
Therefore Na is the most metallic element, followed by Mg, Be, Si and P.

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