Chapter 21, Problem 21.67QP

Interpretation Introduction

Interpretation:

The chemical properties of francium, the last member of group $\text{1A}$ has to be predicted.

Concept introduction:

• Group $\text{1A}$ is also said to be alkali metals.
• Hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium are the group $\text{1A}$ metals.
• These are highly reactive and tarnish when exposed to air.