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irinina [24]
3 years ago
9

How many electrons are there in the only energy level of helium, a noble gas? * Two Three Six Eight​

Chemistry
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer:

Explanation:

Noble gases are the least reactive of all known elements. That's because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons.

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If a frog initially contained 2 grams of carbon-14 and the half-life of carbon-14 is 5,730 years, how much carbon-14 remains in
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Half life is the time taken for a radioactive isotope to decay by half its original mass. In this case the half life of carbon-14 is 5.730 years. 
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Hydrogen gas can combine with oxygen gas under certain conditions to form water.
stellarik [79]

Answer:

The correct answer is product.

Explanation:

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