Which of the following statements about helium is inconsistent with its chemistry?
A) A helium oxygen mixture is used as a deep-sea diving gas instead of compressed air.
B) In its liquid form it is used as a cryogenic coolant for superconductors.
C) It is one of the more reactive elements of its group.
D) Its melting point is -272.2°C and its boiling point is -268.9°C.
Correct Answer:
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