We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Published online by Cambridge University Press: 05 July 2011
Which of the following are true with regard to isotopes of a given element?
They have the same number of nucleons
They have the same atomic mass
They differ in densities
They have the same number of protons but a different number of electrons
They have the same position on the periodic table
Which of the following statements are correct, when referring to an atom?
The valence shell is responsible for radioactivity
Radioactivity results from an imbalance in the number of protons and electrons
All atoms have an equal number of protons and neutrons
Neutrons have a negative charge
Radon contributes to our background radiation
The production of radionuclides can involve:
The addition of a neutron into a stable nucleus
Capturing a negative electron from the K-shell (electron capture)
Addition of a proton into the nucleus using a nuclear reactor
The use of a cyclotron
Removal of electrons from the inner shell
Concerning radionuclide production:
Radionuclides used in medicine are generally found naturally
In a cyclotron, protons are forced into the nucleus
In a nuclear reactor, the addition of a neutron into the nucleus results in an increase in atomic number
Radionuclides produced in a cyclotron can be separated from the stable (carrier) element
[…]
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.
