Post a New Question

Chemistry

posted by .

Write the symbols and a balanced nuclear equation for the following:

a. Polonium -210 decays to give lead -206

b. Bismuth -211 decays by emitting an alpha particle

c. The product from b. emits a beta particle

d. When an alpha particle bombards aluminum -27, one product is silicon -30

  • Chemistry -

    I'll do the first one for you. The three things you keep in mind when doing these problems is
    1. The subscripts must add up on the left and right.
    2. The superscripts must add up on the left and right.
    3. The identify of the element (X for example) is determined by the atomic number which you can find on the periodic table. (You can't find beta + or beta - or protons on the periodic table since these are not elements; you must know what those are)

    The superscripts are mass numbers, the subscripts are atomic numbers.

    21084Po ==>20682Pb + X
    All of the above is in the problem. All you need to do is to identify X.
    210 mass number on the left and 206 on the right; therefore, X must have mass number of 4. Atomic number of 84 on the left and 82 on the right; therefore, the atomic number must be 2. Look on the periodic table and atomic number 2 is He; therefore, we write X as 42He
    The others are done the same way; keep in mind charge and mass for beta +, beta -, protons, neutrons, etc.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. CHEM

    the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking the atom through many transformations to end up as an atom of 208 Pb 82. How many alpha particles are emitted …
  2. Chemistry

    I'm a bit confused as to when I should use an alpha particle and when to use a beta particle in a nuclear equation. For instance, the nuclear equation for carbon-14 is nitrogen-14 and a beta particle. Could I also say the equation …
  3. college chemistry

    The half-life of 13252Te is 3.26 days. This isotope decays by beta emission to a highly unstable intermediate that decays rapidly to a stable product by beta emission. (a) What is the ultimate product obtained from Te-132?
  4. Chemistry

    In a series of decays (hypothetical), the nuclide Ra-227 beomes Pb-203. How many alphas and how many betas are emitted in this series?
  5. chemistry (need some help)

    In a series of decays (hypothetical), the nuclide Ra-227 beomes Pb-203. How many alphas and how many betas are emitted in this series?
  6. chemistry (NEED HELP)

    In a series of decays (hypothetical), the nuclide Ra-227 beomes Pb-203. How many alphas and how many betas are emitted in this series?
  7. Physical Science

    3. Radioactive decay of nuclei often involves several decays before a stable nucleus is formed. This is called a decay chain. What stable isotope is formed when radon-222 undergoes a decay chain of four alpha decays followed by four …
  8. chem

    19. A radioactive nucleus decays to yield a bismuth-211 nucleus and an alpha particle. What was the identity of the original nucleus?
  9. Chemistry

    Radium-223 nuclei usually decay by alpha emission. Once in every billion decays, a radium-223 nucleus emits a carbon-14 nucleus. Write a balanced nuclear equation for alpha emission. Write a balanced nuclear equation for carbon-14 …
  10. Chemistry

    Radium-223 nuclei usually decay by alpha emission. Once in every billion decays, a radium-223 nucleus emits a carbon-14 nucleus. Write a balanced nuclear equation for alpha emission. Write a balanced nuclear equation for carbon-14 …

More Similar Questions

Post a New Question