The new isotope produced is 23490Th (by finding
the symbol for Z = 90 in the Periodic Table).
b. Beta radiation ( 0ö1e
emitted from nucleus):
21082Pb => 0ö1e
+ AZX
210= (0 + A) A must be 210
82 = (ö1 + Z) Z must be 83
The new isotope produced is 21083Bi.
c. Fission (see Language of Chemistry ):
23592U + 10n =>
13956Ba
+ 9436Kr + 310n
+ Energy
235 + 1 = 139 + 94 + 3(1)
(conservation of mass number)
92 + 0 = 56 + 36 + 3(0)
(conservation of charge)
NOTE: Many other products of uranium fission in addition
to barium and krypton are formed.
d. Fusion (see Language of Chemistry ):
411H => 42He +
201e + Energy
4(1) = 4 + 2(0) (conservation of mass number)
4(1) = 2 + 2(1) (conservation of charge)
4. Student Worksheet: Writing Nuclear Equations
Part A. Complete each of the following by identifying AZX.
1. 23592U + 10n => AZX
2. 22288Ra => 42He + AZX
3. AZX + 0ö1e => 5424Cr
4. 5426Fe + 10n => 11H + AZX
5. 23892U + 126C => 24698Cf + 4AZX
6. AZX + 42He => 24597Bk + 11H + 210n
7. 23592U + 10n => 13956Ba + AZX + 310n
8. 21H + 31H
=> AZX + 10n
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