Answer:
B) Their valence shell is full
Explanation:
In order to be classified as a noble gas, an element must have a complete octet/ a full shell of valence electrons, as shown in answer B.
A and C are just incorrect. Since noble gasses are very unstable, D is a true statement, but is isn't the correct answer as this does not explain why they are inert.
<h3>Hope this was helpful!</h3>
I'm pretty sure that significant figures is just the amount of numbers there is. So, in this case I think the answer would be D. 5
The correct answer for this question is this one: "D. Hydrosphere"
There exists the same question with the choices and an attached imaged.These are the following choices:
<span>A. Biosphere
B. Cryosphere
C. Geosphere
D. Hydrosphere</span>
Hope this helps answer your question and have a nice day ahead.
C. Weak acid is the correct answer
