A) \[_{82}P{{b}^{208}}\]
B) \[_{82}B{{i}^{209}}\]
C) \[_{82}P{{b}^{206}}\]
D) \[_{82}P{{b}^{207}}\]
Correct Answer: A
Solution :
The thorium series ends with\[_{32}P{{b}^{208}}\].
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