Chemistry

What are the equations for the following?
Positron emission from silicon-26
and
Sodium-22 undergoes electron capture

I really don't get it
Thank you

  1. 👍 0
  2. 👎 0
  3. 👁 381
asked by Aubrey
  1. All you really need to know is two things.
    1. Can you add and subtract up to 2.
    2. Do you know the mass and charge of particles?
    A positron is a + electron, and we show it as 1e^0 where the 1 is the charge and the ^0 is the mass of zero. The subscripts must and the superscripts must add. The number appearing before is the subscript and the number with a caret after is a superscript.
    16Si^26 ==> 1e^0 + 15X^26.
    Note that 16 on the left equals 1 +15 on the right.(I got the 15 by 16-1=15). The 26 on the left equals ) + 26 on the right. I don't know what X is, now I look on the periodic table and I see that element number 15 is P and I can erase X and replace it with P.

    For electron capture, we have
    11Na^22 + -1e^0 ==> I will let you do this one. Just make the numbers on the right add to those on the left.

    1. 👍 0
    2. 👎 0
  2. Positron Emissionfrpm silicon -26 would be:
    26/14Si (arrow) Al + 0/+1 e

    Sodium-22 undergoes electron capture
    22/11Na + 0/-1e (arrow) 22/10Ne

    1. 👍 0
    2. 👎 0
    posted by Aubrey
  3. You are absolutely correct. And I'm glad to saw I didn't read the atomic number of Si correctly. It is 14 big as life and not 16. Eyes again.

    1. 👍 0
    2. 👎 0
  4. Thanks Dr. Bob

    1. 👍 0
    2. 👎 0
    posted by Aubrey

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Help plzzz Besides the major types of radioactive decay, there are two others: positron emission and electron capture. • Compare and contrast positrons with electrons. • Explain how positron emission works and how it causes

    asked by Help!!! Maddie on May 31, 2013
  2. chemistry 1

    How do you write balanced equations A. Neutron emission by 88Br B. Electron absorption by 116Sb C. Positron emission by 184Hg D. Alpha emission by 229Th E. Neutron capture by 200Hg

    asked by Alexus on October 25, 2013
  3. Physics

    A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an electron, photon+electron produce positron+electron+electron The two electrons and the positron move off

    asked by Abby on March 22, 2011
  4. Chemistry

    1.a radioscope which is neutron poor and very heavy is most likely to decay by? alpha , beta, electron capture, positron emission 2. When a 235-U nucleus is struck by a thermal neutron, fission occurs often with the release of

    asked by keith on April 27, 2007
  5. Chem

    The only stable isotope of fluorine is fluorine-19. Predict possible modes of decay for fluorine-21, fluorine-18, and fluorine-17. Would it just be alpha-particle production, beta-particle production, gamma-ray production, and

    asked by Steve on March 25, 2007
  6. Chemistry

    Predict the mode of decay for Mn-59. a. beta decay

    asked by . on June 11, 2019
  7. Science

    Which of the following characteristics x-ray photon emission? (a)electron capture (b)beta-decay (c)positron emmision (d)gamma-decay

    asked by Olushola on April 14, 2015
  8. Chemistry

    Hi, I am having trouble determining the correct answer for this question. Which one of the following decay modes has not been observed? A)neutron emission B)Positron emission C)Alpha emission D) electron capture I don't know what

    asked by Kyle on November 25, 2006
  9. Chemistry, Physics (Radiation Toxicology)

    a) Na-22 decays in two ways. In 100 atoms of Na-22 decaying, how many would decay by positron emission and how many would decay by electron capture? Why is the yield of photon gamma (+/-) so high? b) In 100 decays of Ra-226, how

    asked by Naresh on September 27, 2011
  10. chemistry

    Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh

    asked by lana on December 5, 2013

More Similar Questions