By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic? Ga Ge As Se Be

Metallic character of elements depends upon the position in periodic table. Group numbers of given elements are as follows:
(i) Beryllium (Be) – Group 2nd
(ii) Ga (Gallium), Ge(Germanium), As (Arsenic) and Se (Sellenium) belongs to 13th, 14th, 15th and 16th groups respectively.
(iii) Since, metallic character decreases by moving left to right in a period, thus, Beryllium is the most metallic as it is at the left of 2nd period and Selenium is a non-metal as it is right most in the third period.
(iv) Thus, Beryllium is most metallic and selenium has least metallic character as it is a non-metal.