Chapter 3.2, Problem 34LC

Interpretation Introduction

Interpretation : The densities of the elements in Group 1A are to be interpreted. Group 1A elements are less dense to be identified.

Concept Introduction : The connectivity between mass and volume is density. The formula of density is given as

  $\text{Density =}\frac{\text{mass}}{\text{volume}}$

Answer to Problem 34LC

Group 1A elements such as lithium, sodium, and potassium are less dense than water.

Explanation of Solution

Density is the product of mass and volume.

The elements in Group 1A are Lithium, Sodium, Potassium, Rubidium, and Caesium.

From the data, the density of the elements is listed below:

The density of Lithium is $0.53{\text{g/cm}}^3$ .

The density of Sodium is $0.97{\text{g/cm}}^3$ .

The density of Potassium is $0.86{\text{g/cm}}^3$ .

The density of Rubidium is $1.53{\text{g/cm}}^3$ .

The density of Caesium is $1.88{\text{g/cm}}^3$ .

The density of pure water at ${\text{4}}^{\text{o}}\text{C}$ is $1.00{\text{g/cm}}^3$ .

According to the data, elements such as lithium, sodium, and potassium are less dense than water.