Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 19 - Sections 19.1-19.12 - Exercises - Review Questions: 5

Answer

An alpha particle is essentially a Helium-4 nucleus, with 2 protons and 2 neutrons. When an alpha particle is emitted, the mass number decreases by 4 and the atomic number decreases by 2.

Work Step by Step

Alpha particles are considered the least dangerous form of radiation because they cannot penetrate the skin to damage any living cells.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.