Metal reactivity relates to ability to lose. Four major factors affect reactivity of metals: nuclear charge, atomic radius, shielding effect and sublevel arrangement (of electrons). And the farther they are from the righ side of the table, the weaker their electronegativity is, resulting in lower Chemical Reactivity. The elements within the same group of the periodic table tend to exhibit similar physical and chemical properties. That is why as you go up a group Chemical Reactivity increases because it is easier for elements to gain electrons when they have high electronegativity. Chemical Reactivity decrease as you go down the groupįor Non-Metals, the farther right-up in the table you go, the higher the electronegativity.
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