Chapter 20, Problem 69E

Interpretation Introduction

Interpretation: An explanation corresponding to the given statement “Although $\text{He}$ is the second most abundant element in the universe, it is very rare on the earth.” is to be stated.

Concept introduction: The natural phenomenon that brought all the things (that have some mass) towards each other is known as gravity.

Helium is very light element.

To determine: An explanation corresponding to the given statement “Although $\text{He}$ is the second most abundant element in the universe, it is very rare on the earth.”