Chemistry > 2004 > 7
WASSCE
A nuclide emits a beta-particle 0-1e. In the process, the atomic number
A.
increases by 1 while the mass number remains constant
B.
decreases by 2 while the mass number remains constant
C.
remains constant while the mass number decreases by 2
D.
remains constant while the mass number increases by 1
Answer: A
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