Following statements regarding the periodic trends of chemical reactivity of alkali metals and halogens are given. Which of these statements give the correct picture?

Options

A. In both, the alkali metals and the halogens, the chemical reactivity decreases with increase in atomic number down the group
B. Chemical reactivity increases with increase in atomic number in both alkali metals and halogens
C. In alkali metals the reactivity increases but in the halogens, it decreases with increase in atomic number down the group
D. The reactivity decreases in the alkali metals but increases in the halgons with increase in atomic number down the group

Answer

C

Explanation

Reactivity of alkali metals `LiltNaltKltRbltCs`
Reactivity of halogens :`FgtCIgtBrgtI`