Alkali Metal Reactivity Trend
Which statement best explains the periodic trend in reactivity for the alkali metals?
A
Reactivity increases down Group 1 due to decreasing ionization energy
B
Reactivity increases across Period 3 toward alkali metals
C
Reactivity is constant in Group 1 due to identical valence shells
D
Reactivity decreases down Group 1 due to increasing atomic radius
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