A. is monatomic
B. is radioactive
C. is a noble gas
D. has a complete valence shell
E. has a low boiling point
Correct Answer:
Option B – is radioactive
A. is monatomic
B. is radioactive
C. is a noble gas
D. has a complete valence shell
E. has a low boiling point
Correct Answer:
Option B – is radioactive
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