Logout Open In App
Open In App
Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Chapter 42: Q 27 Exercise (page 1236)

a. What are the isotopic symbols of all A = 19 isobars?

b. Which of these are stable nuclei?

c. For those that are not stable, identify both the decay mode and the daughter nucleus.

Short Answer

Expert verified

Hence, the isotopic symbols are:

F19,O19andNe19

Step by step solution

01

Given information

A = 19 isobars

02

Explanation (a)

a.) The A= 19 isobars are: 19F, 19O and 19Ne.

03

Explanation (b)

b.) The 19F is stable isotope.

04

Explanation (c)

c.) Daughter nucleus of 19Ne and 19O is 19F

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

We’ve noted that fewer than 10%of the known nuclei are stable (i.e., not radioactive). Because nuclei are characterized by two independent numbers, Nand Z, it is useful to show the known nuclei on a plot of neutron number Nversus proton numberZ.

Use the graph of binding energy to estimate the total energy released if a nucleus with mass number 240 fissions into two nuclei with mass number 120.

The plutonium isotope 239 Pu has a half-life of 24,000 years and decays by the emission of a 5.2 MeV alpha particle. Plutonium is not especially dangerous if handled because the activity is low and the alpha radiation doesn’t penetrate the skin. However, there are serious health concerns if even the tiniest particles of plutonium are inhaled and lodge deep in the lungs. This could happen following any kind of fire or explosion that disperses plutonium as dust. Let’s determine the level of danger. a. Soot particles are roughly 1 mm in diameter, and it is known that these particles can go deep into the lungs. How many atoms are in a 1.0@mm@diameter particle of 239 Pu? The density of plutonium is 19,800 kg/m3 . b. What is the activity, in Bq, of a 1.0@mm@diameter particle? c. The activity of the particle is very small, but the penetrating power of alpha particles is also very small. The alpha particles are all stopped, and each deposits its energy in a 50@mm@diameter sphere around the particle. What is the dose, in mSv/year, to this small sphere of tissue in the lungs? Assume that the tissue density is that of water. d. Is this exposure likely to be significant? How does it compare to the natural background of radiation exposure?

Consider a nucleus with mass number A. Its mass, within 1%, is Aatomic mass units.

The fact that Acancels means that all nuclei have this density. It is a staggeringly large density, roughly 1014times larger than the density of familiar liquids and solids.

One early objection to Rutherford’s model of a nuclear atom was that matter simply couldn’t have a density this high. Although we have no direct experience with such matter, nuclear matter really is this dense.

An unstable nucleus undergoes alpha decay with the release

of 5.52 MeV of energy. The combined mass of the parent and

daughter nuclei is 452 u. What was the parent nucleus?
See all solutions

Recommended explanations on Physics Textbooks

Conservation of Energy and Momentum

Read Explanation

Electricity and Magnetism

Read Explanation

Linear Momentum

Read Explanation

Scientific Method Physics

Read Explanation

Fundamentals of Physics

Read Explanation

Magnetism and Electromagnetic Induction

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free