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ater and pro sitive ions i
base salt
ory, a base
a􏰀 acceptor a􏰀 donor
duces n the
is an
(1) fermentation (3) reduction (2) depositiSonample Regent(s4)Qfuisesitoinons
29 Whichtermidentifiesatypeofnuclearreaction?
30 Which radioisotopes have the same decay mode and have half-lives greater than 1 hour?
(1) Au-198 and N-16 (3) I-131 and P-32 (2) Ca-37 and Fe-53 (4) Tc-99 and U-233
June 2013 #30
Choice #3
Answer
Explanation: Check Reffy, Table N (p. 6) to find this info. The decay modes of I-131 and P-32 involve beta particles (column 3), and the half-lives of both of these isotopes are more than 1 hour (column 2).
o
e
N N
(2) CH3OH (4) Ca(OH)2
UNIT 12: NUCLEAR CHEMISTRY © 490