1.Uranium-238 will decay to thorium-234 by means of a. gamma decay b. sigma decay c. beta...
1.Uranium-238 will decay to thorium-234 by means of
a. gamma decay
b. sigma decay
c. beta decay
d. alpha decay
2. Which of these is the oxidizing agent?
Zn + 2H+ -------> Zn+2 + H2
a. H2
b. 2H+
c. Zn
d. Zn+2
Homework Answers
1. Option D, Alpha decay. Since Alpha decay decreases the atomic number by 2 units and mass number by 4 units.
92U238----> 90Th234+ 2He4
2. Option B ,2H+
Since here oxidation no of Zn increases from 0 to +2 by H+
Oxidizing agent is the one which oxidize the other and it gets reduced. Here H+ oxidize the Zn fr 0 to +2 and it gets reduced from +1 to 0.
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