In positron emission tomography (PET) ,a positron collides with an electron and the two particles disappear in a burst of
A) an alpha particle and a gamma ray.
B) two beta particles.
C) a neutron and an alpha particle.
D) two gamma rays.
Correct Answer:
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Q51: Which one of the following is most
Q52: Which of the following statements about transmutation
Q53: Radioisotopes have been used as tracers in
Q54: Positron emission tomography (PET)is a
A)therapy for cancer
Q55: The radioactive decay of ⁹⁹ᵐTc to ⁹⁹Tc
Q57: Transmutation
A)can be carried out by chemical means,
Q58: Technetium-99ᵐ is a radioisotope used in a
Q59: Gadolinium-153 is the most widely used radioisotope
Q60: Which of the following resulted in the
Q61: The most stable elements have
A)a high binding
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