Noble Gases, Alkali Metals & Halogens

What group are Noble gases in?

Group 0

Why are noble gases unreactive?

They have a full outer shell

Do noble gases have high or low boiling points?

Very low

What is an Alkali Metal?

The elements in Group 1 of the periodic table.

How many electrons are on the outer shell of Group 1 metals?

1

How reactive are Alkali Metals?

Very reactive

What happens to the reactivity of Alkali metals, going down the group?

Reactivity increases as the distance between the nucleus and the outer electron increases, decreasing the attraction.

What is produced when alkali metals react with water?

Hydrogen gas and an alkaline solution

Ha

As you move down the group, what happens to the halogens melting & boiling points?

They both increase

As you move down the group, what happens to the halogen’s reactivity?

Decreases as the attraction decreases it is harder to gain an outer electron

Do halogens react with alkali metals?

They react vigorously to form ionic compounds e.g. sodium + chlorine —> sodium chloride

Do halogens react with non-metals?

They form covalent compounds e.g. hydrogen + chlorine —> hydrogen chloride