The electrons that are in the outermost electron shell, also known as the valence shell, have more energy then those in the inner electron shells, I hope this helps<3
I think it’s C but I’m not sure
<h2>0.2 atm </h2>
Explanation:
The new pressure can be found by using the formula for Boyle's law which is

Since we're finding the new pressure

We have

We have the final answer as
<h3>0.2 atm</h3>
Hope this helps you
Answer:
It's a very good subject!