Question 1: Write the following isotopes in nuclide notation (e.g., "14/6 C")
(a) oxygen - 14
(b) copper - 70
(c) tantalum - 175
(d) fancium - 217

Question 2: Which of the following nuclei lie within the band of stability shown in Figure 21.2?

(a) argon - 40
(b) oxygen - 16
(c) ¹²²Ba
(d) ⁵⁸Ni
(e) ²⁰⁵Tl
(f) ²¹⁰Tl
(g) ²²⁶Ra
(h) magnesium-24

Figure

Question 3: Complete each of the following equations:

(a) 7/3.Li⁺?? 2.4/2.He

(b) 14/6.C ?14/7 N + ?

(c) 27/13.AI+ 4/2He ? ? + 1/0.n

(d) 250/96.Cm ? ?+ 98/38Sr + 41/0.n

Question 4. For the reaction 14/6 C ?14/7 N + ?, if 100.0 g of carbon reacts, what volume of nitrogen gas (N₂) is produced at 273K and 1 atm?

Question 5. What changes occur to the atomic number and mass of a nucleus during each of the following decay scenarios?
(a) an α particle is emitted
(b) a β particle is emitted
(c) γ radiation is emitted
(d) a positron is emitted
(e) an electron is captured

Question 6. ²³⁹Pu is a nuclear waste byproduct with a half-life of 24,000 y. What fraction of the 239Pu present today will be present in 1000 y?

Question 7. A.7/4.Be atom (mass = 7.0169 amu) decays into a.7/3.Li atom (mass = 7.0160 amu) by electron capture. How much energy (in millions of electron volts, MeV) is produced by this reaction?

Question 8. Write a balanced equation for each of the following nuclear reactions:
(a) mercury-180 decays into platinum - 176
(b) zirconium-90 and an electron are produced by the decay of an unstable nucleus
(c) thorium-232 decays and produces an alpha particle and a radium-228 nucleus, which decays into actinium-228 by beta decay
(d) neon-19 decays into fluorine- 19