3) Which of the following is a true statement A: Organic carbon is found in all non-living things.
B: A compound has different properties from each of its elements.
C: Water is made from the elements of carbon and oxygen.
D: Hydrogen compounds are the most common in th

It would be

No because it not possibly

Answerhund's rule;

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.