Answer:
Benzene must be kept away from flames.
Explanation:
Edge2020
Answer;
-Not that reactive
The element found is not very reactive.
Explanation;
-If an element is found in nature in its pure elemental state then the the element found is not very reactive.
-There are many elements which are not much reactive. such as in metals- Ag, Au, Hg, Cu etc. and in Non metals- O2, N2, Inert gases etc.
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For checking its chemical properties you will have to examine it with O2 or C-12.
The best and most correct answer among the choices provided by your question is the first choice which is "<span>An unstable nucleus decays into a more stable nucleus."
</span>Radioactive decay<span> (also known as </span>nuclear decay<span> or </span>radioactivity<span>) is the process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays, and conversion electrons. A material that spontaneously emits such radiation is considered </span>radioactive<span>.</span>
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