Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?
- AChemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
- BIn alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group
- CThe reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
- DIn both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
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