Consider the 3 isotopes of F: 18F, 19F, and 20F . One of these isotopes is stable, one emits a positron, and one emits a beta particle. Indicate which does which, and explain why you chose as you did.   a:Stable _______ Reason:         b: Positron emission ________ Reason:         c: Beta emission__________ Reason

Select the balanced nuclear equations for the alpha decay of each of the following nuclides: a)  Bismuth-210                                       21083??+42?⟶21485??83210Bi+24α⟶85214At 21083??−42?⟶20681??83210Bi−24α⟶81206Tl 21083??⟶42?+20681??83210Bi⟶24α+81206Tl 21083??⟶42?+21485??83210Bi⟶24α+85214At b)  Americium-243                                     24395??⟶42?+23993??95243Am⟶24α+93239Np 24395??+42?⟶24797??95243Am+24α⟶97247Bk 24395??+42?⟶23993??95243Am+24α⟶93239Np 24395??⟶42?+24797??

Due: Today All changes saved 6. If a nucleus needs to decrease its neutrons and add a proton to become more stable, which type of particle will it most likely emit? neutron beta particle gamma particle positron V NL 8 00:41:29 PREVIOUS 16 of 20 NEXT SAVE & EXIT

A sample of mercury-194 has an activity of 0.250 Ci.  How many milligrams of Hg-194 are present in the sample?Answer: ___ milligrams

MAIN IDEA: Nuclear fusion reactions are exothermic and produce significantly more energy per mass of fuel than fission reactions. 5. Look at Figure 1 showing the relationship between binding energy and mass number. Summarize how the slope of the line for mass numbers 80 and higher compares to the slope of the line for mass numbers 20 and lower. Summarize how this relates to the relative amount of energy produced by fission reactions and fusion reactions. BAB Binding Energy v. Mass Number Binding energy per nucleon (MeV/nucleon) 10 9 8 7 5 3 2 1 0 0 40 iron-56 - region of maximum stability 80 120 160 Mass number, A (number of nucleons) 200 240

Which of the following nuclides is most likely to undergo beta decay? O O O 187 Re 75 183 Re 75 185- 5 Re 75 189 9 Re 75 Submit Request Answer

Assume that your "radioactivity" was C-14 (carbon-14, carbon with mass number 14) and that it undergoes beta decay. Write the balanced nuclear equation for this reaction.

Consider the 3 isotopes of F: 18F, 19F, and 20F . One of these isotopes is stable, one emits a positron, and one emits a beta particle. Indicate which does which, and explain why you chose as you did.  a. Stable _______ Reason:         b. Positron emission ________ Reason:           c. Beta emission__________ Reason: