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 ?

Question

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

Tardigrade Admin · Accepted Answer

Alkali metals reactivity increases down the group as electropositivity increases, but for halogens F2is more reactive as moving down molecular stability increases.

Q. 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 ?

The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group

In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group

Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens

In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group

Alkali metals reactivity increases down the group as electropositivity increases, but for halogens $F_{2}$ is more reactive as moving down molecular stability increases.

Q. 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 ?

The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group

In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group

Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens

In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group

Alkali metals reactivity increases down the group as electropositivity increases, but for halogens F2​is more reactive as moving down molecular stability increases.

Alkali metals reactivity increases down the group as electropositivity increases, but for halogens $F_{2}$ is more reactive as moving down molecular stability increases.