Question

why metallic character goes on decreasing while going from left to right in a period​

Answer 1

because of increasing radius

Answer 2

Answer:

in general metallic character decreases across the Periodic Table and increases down the Periodic Table because the ionization potential of the atoms increases across and decreases down the Table. This generality needs to exclude the transition elements and lanthanoids for which ionization potentials remain more similar while the number of electrons in outer shells available to form metal bonds increases

Explanation: