   Chapter 2, Problem 3PS

Chapter
Section
Textbook Problem

An atom has a very small nucleus surrounded by an electron “cloud.” Figure 2.1 represents the nucleus with a diameter of about 2 mm and describes the electron cloud as extending over 200 m. If the diameter of an atom is 1 × 10-8 cm, what is the approximate diameter of its nucleus?

Interpretation Introduction

Interpretation:

The diameter of the nucleus is given that 2mm and the electron cloud or diameter of atom is 200m, if the diameter of the atom is 1×10-8cm, then the diameter of nucleus has to be determined.

Explanation

The diameter of the nucleus is given that 2mm.

The electron cloud or diameter of atom is 200m.

That means,

diameter of the nucleus:diameter of atom=2×10-3m:2×102m=1:10

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