   Chapter 25, Problem 9PS

Chapter
Section
Textbook Problem

How many alpha and beta emissions occur in the uranium-238 radioactive decay series ending with lead-206?

Interpretation Introduction

Interpretation:

Number of alpha and beta emission that occurs in the uranium-238 radioactive decay series ending with lead-206 has to be identified.

Concept introduction:

In alpha decay, there will be lose of He nucleus: mass number decreases by four and atomic number decreases by two.

In beta decay, there will be a lose of electron from nucleus (neutron turns into proton): there will be no change in mass number and atomic number increases by one.

Explanation

Here, starting from U92238 to P82206b, there occurs eight alpha decay and six beta decay as given in below equation.

(U92238αT90234hβP91234aβU92234αT90234hαR88226aαR86222h

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