1. e. Ba
2. d. 54
3. c. 120
Column A
1.
The symbol of the new daughter atom is _______.
2.
The atomic number of the new daughter atom is _______.
3.
The mass number of the new daughter atom is _______.
Column B
a.121
b.56
c.120
d.54
e.Ba
f.Xe
1 answer