The Brainliest Answer!
Metallic character means losing electrons.
metallic character in up of grp is less because of more nuclear force , less no. of shells so it can loose easily.
in down the grp due to less nuclear force and more no. of shells metallic character
increases down the group. in left ti right in period metallic character decreases becoz it is easy to loose 1 electron(sodium) then 2 or more no. of electrons.

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