University:
Eastern Kentucky University
Course:
CHE 111 | General Chemistry
Academic year:

2020
Views:

84

Pages:

2
Author:

folclord7m

Nuclear Chemistry Worksheet Name_______________________________ Date _11/29/20______________ 1) What is the nuclear symbol for a radioactive isotope of copper with a mass number of 60? Cu 60 29 2) The nuclear symbol of helium, alpha 3) The symbol beta He, is also the symbol for a(n) ________ particle. e is a symbol used for a(n) ________ particle. 4) The radiation particle with 0 mass and a charge of 1+ is called a(n) ________. positron 5) The process in which a nucleus spontaneously breaks down by emitting radiation is known as ________. radioactive decay 6) The nuclear reaction shown below is an example of what type of process? Th → Rn + He alpha decay 7) The nuclear reaction shown below is an example of what type of nuclear reaction? Sn → Sb + ? beta decay 8) Thallium-201 has the nuclear symbol nucleus? 81 Tl. What is the number of protons in this 9) According to the following equation, radon decays into what atom? Rn → ? + He Polonium 226/86Rn ---------> 222/84Po + 42He 10) The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min? 0.5 mg