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anonymous
 one year ago
Write a nuclear equation for beta decay :
A) Carbon14
B) Sodium24
C) Lead210
Write a nuclear equation for alpha decay of:
A) Thorium232
B) Uranium234
C) Radium223
Iodine has a half life of 8 hours. If a solution containing 5 grams of iodine131 is injected into a patient, how long will it take until the total amount of iodine 131 left in the patient us 5 micro grams?
anonymous
 one year ago
Write a nuclear equation for beta decay : A) Carbon14 B) Sodium24 C) Lead210 Write a nuclear equation for alpha decay of: A) Thorium232 B) Uranium234 C) Radium223 Iodine has a half life of 8 hours. If a solution containing 5 grams of iodine131 is injected into a patient, how long will it take until the total amount of iodine 131 left in the patient us 5 micro grams?

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Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2For beeta decays: there are 2 types of beeta decays, positive beeta decay and negative beeta decay. Positive decay usually occurs in nuclei which has more protons and also the negative beeta decays occur in nuclei which have more neutrons. negative beeta decay: A neutron will be broken down as follows \[n \rightarrow Proton + negative beeta particle + neutrino \] Positive beeta decay : A proton will be broken as follows \[P \rightarrow Neutron + Positive beeta particle + neutrino \] In both the decays when 1 proton is broken down a neutron is made and vise versa hence the no. of nucleons are constant for a given element.

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2Answers for the 1st part 1) Here the no. of neutrons are greater than the no. of protons hence it is a negative beeta decay. Thus the number of the proton increase by one \[C_{6}^{14} \rightarrow N_{7}^{14} + negative beeta particle + neutrino \] 2) It is again a beeta negative decay \[Na_{11}^{24} \rightarrow Mg_{12}^{24} + Beetanegative particle + neutrino \] 3) It is also a negative beeta particle decay \[Pb_{82}^{210} \rightarrow Bi_{83}^{210} + negative beeta particle + neutrino \]

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2An alpha particle decay always remove 2 protons and 2 neutrons. 1) \[Th_{90}^{232} \rightarrow Ra_{88}^{228} + \alpha \] 2) \[U_{92}^{234} \rightarrow Th_{90}^{230} + \] 3) \[Ra_{88}^{223} \rightarrow Rn_{86}^{219} +\]
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