carmentrochetownsend carmentrochetownsend

16-09-2019
Biology

contestada

PLEASE HELP THIS IS IMPORTANT
Which of the following elements is a noble gas? A. Radon (Rn) B. Nickel (Ni) C. Potassium (K) D. Strontium (Sr)

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unique1429 unique1429

16-09-2019

The answer is RADON for sure

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giselaroman77 giselaroman77

17-09-2019

option A is the correct answer

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