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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Oxygen-15 is used in the medical procedure called positron emission tomography. This isotope is prepared on a cyclotron from irradiation of nitrogen-14 with deuterium nuclei. It decays to nitrogen-15 by positron emission, and the positrons are annihilated when they collide with electrons, forming two gamma rays. Write equations for the three reactions described here.

Interpretation Introduction

Interpretation:

Equations for the formation of oxygen-15 used in the medical procedure called positron emission tomography have to be written.

Concept introduction:

Pet or positron emission tomography is a non-invasive medical imaging technology that shows the biology of disorders at the molecular level before anatomical changes are visible.

Explanation

Step-1: The radioactive isotope of nitrogen-14 is converted into oxygen-15 by the irradiation with deuterium nuclei. The equation is as follows,

N714+12HO815+n01

Step-2: Oxygen-15, so formed in the step-1 decays to nitrogen-15 by the emission of positron. The equation is as follows,

O815

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