An atom that has the same number of neutrons as
138 Ba
56
A)138 Cs
55
B) 136Ba
56
C) 137La
57
D) 136Xe
54
E) none of the above
Answer: D
An atom that has the same number of neutrons as 138 Ba 56
An atom that has the same number of neutrons as
A)138 Cs
55
B) 136Ba
56
C) 137La
57
D) 136Xe
54
E) none of the above