Answer
a) Metallic character decreases as we move from left to right and increases as we move down the periodic table.
b) Ionisation energy increases from left to right and decreases as we move down the periodic table.
c) Atomic size decreases on moving from left to right and increases as we move down the periodic table.
Work Step by Step
a) Metallic character depends on the ease of the element to lose electrons. More easily the element loses electrons, more metallic it is. It decreases as we move from left to right and increases as we move down the periodic table.
b) The energy required by an element to lose the valence electrons is called Ionisation element. Ionisation energy increases from left to right and decreases as we move down the periodic table. More metallic elements have less ionization energy.
c) Atomic size decreases on moving from left to right and increases as we move down the periodic table.
