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NISA [10]
3 years ago
9

Uses of noble gases with description please. thanks

Chemistry
1 answer:
anyanavicka [17]3 years ago
6 0
The elements in this group are helium<span>, neon, </span>argon<span>, </span>krypton<span>, </span>xenon<span>, and radon. They are monatomic </span>gases<span>. ... They are extremely rare in nature, and none was known until </span>helium<span> was discovered to exist on the sun. In fact, the name of the element </span>helium<span> was derived from the Greek word Helios, </span>used<span> to refer to the sun.</span>
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Oxidation of Nitrogen in NO2​
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Explanation:

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4 0
2 years ago
Radium-221 has a half-life of 30 sec. How long will it take for 96% of a sample to decay?
monitta
We can calculate how long the decay by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.
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