Answer:
The answer would be Uranium-238
Explanation:
It's the only one that lasts longer than 40,000 years
Answer:
Yes
Explanation:
The possibility of evaporating and condensing is a proof of reversible reaction
Answer:
Mg
Explanation:
If one were comparing just the neutral atoms Mg and S, the S atom would be smaller as both elements are in the same period and sulfur is more to the right
