MIME-Version: 1.0 Content-Location: file:///C:/D9286902/Fall08.Phys3650.Quiz9.SolutionWeb.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" Department of Natural Sciences

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Department = of Natural Sciences

Clayton State University

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November 14, = 2008

Physics 365= 0 – Quiz 9

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Name  _SOLUTION____________________________________

 

 

1. A radioactive isotope which emits an alpha pa= rticle will change in what respect?

 

  &nbs= p;         a. Atomic number decreases by four.

 

  &nbs= p;         b. Mass number decreases by = four.

 

  &nbs= p;         c. Both choices a and b are valid.

 

  &nbs= p;         d. None of the above choices are valid.

 

 

2. If there are 128 neutrons in Pb-210, how many neutrons are in the nucleus of Pb-206 ?

 

  &nbs= p;         a. 122.

 

  &nbs= p;         b. 124.

 

  &nbs= p;         c. 126.

 

  &nbs= p;         d. 130.

 

 

3. What particle is emitted when P-32 decays into S-32? (Atomic numbers of P and S are, respectively, 15, and 16.)=

 

  &nbs= p;         a. Alpha.

 

  &nbs= p;         b. Beta.

 

  &nbs= p;         c. Positron.

 

  &nbs= p;         d. Gamma photon.