Multiple Choice
Which statement about our current knowledge of elements is FALSE?
A) We now know of more than 110 elements, both natural and man-made.
B) 81 stable elements have been found on Earth.
C) 10 radioactive elements are also found on Earth.
D) We have now produced over 50 radioactive elements not occurring in nature.
E) Technetium is found in giant stars, but not yet in nature on the Earth.
Correct Answer:
Verified
Correct Answer:
Verified
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