Answer:
sorry I didn't know the answer
Explanation:
ok
The noble gases are relatively unreactive because they have a stable octet of valence electrons.
Thus, they do not tend to undergo reactions in which they will gain or lose valence electrons,
However, <em>only He, Ne, and Ar are inert</em>. Kr and Xe combine with other highly reactive elements to form stable compounds.
C, the amount of oxygen produced is the dependent variable since that is what is being measured and it is dependent on which substance is being tested
