Which of the following statements is/are correct? I. Positron emission decreases the mass number of a nucleus by one. II. Positron emission decreases the number of protons in a nucleus by one. III. When a nuclei undergoes positron emission, a neutron is converted to a proton.     a. I only   b. II only   c. III only   d. I and II   e. I, II, and III

Chemistry: Matter and Change
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Chapter24: Nuclear Chemistry
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Which of the following statements is/are correct?

I. Positron emission decreases the mass number of a nucleus by one.
II. Positron emission decreases the number of protons in a nucleus by one.
III. When a nuclei undergoes positron emission, a neutron is converted to a proton.

 

  a.

I only

  b.

II only

  c.

III only

  d.

I and II

  e.

I, II, and III

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