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Radioactive Decay Review....

Discussion in 'MCAT: Medical College Admissions Test' started by chandler742, Aug 11, 2002.

  1. chandler742

    chandler742 Senior Member
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    Let's suppose that a massive element has undergone a radioactive decay. The new element has the same mass but the atomic number decreased by one.

    What other particle was emitted in this decay?

    A) Alpha partice
    B) Positron
    C) Electron
    E) Gamma Ray

    Case #2
    What if the atomic number and mass number stayed the same?


    Case #3
    What if the atomic number increased by one and the mass number stayed the same?

    Good Luck on the MCAT. I'll be later in the week.
     
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  2. eurotrash

    eurotrash Member
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    positron, gama, beta
     
  3. OP
    OP
    chandler742

    chandler742 Senior Member
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    right, right, and close.


    keep in mind that a positron is considered a Beta particle too. An electron is beta - and positron is beta +.

    Also to account for the conservation of momentum neutrino and anti neutrino escape in the radioactive decay.

    Anti-neutrino leaves with electon.
    Neutrino leaves with positron.

    Mneumonic. (A)lphabetically an atom is made of (e)lectrons,
    :thumbdown:eutrons, and (p)rotons(AENP).

    AENP-> Anti-neutrino=electron, neutrino=positron.

    This is what I used, if it doesn't work disregard.

    I'm off. Later.
     
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  4. freakazoid

    freakazoid Guy Friend Extraordinaire
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    I'm gone for a day and end up not getting to answer your questions before you answer them for real. :) Itz kool though, I just don't look at what other people put anyways. Good job, chandler. Keep 'em coming. :clap:
     
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