Correct option is C
As the atomic number increases across a period in the periodic table, the atomic size decreases due to increased nuclear charge. This makes it more difficult for the atom to lose electrons, and thus, the
metallic character decreases, while non-metallic character increases.
Information Booster:
· Metallic character refers to the ability to lose electrons easily.
· Across a period, electronegativity and ionization energy increase.
· Reactivity trends depend on whether the element is a metal or a non-metal.
· Metals are more reactive on the left of the period, while non-metals are reactive on the right.
· Metallic character increases down a group.
· Example: Sodium (metallic) to Chlorine (non-metallic) in Period 3.
