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.
Answer:
18 grams
Explanation:
Because 17,190 yrs divided by the amount of years it takes for a half-life to occur is 3. So 3 half life’s happen, so you divide 144/2 once, equaling 72. You divide 72/2 again (another half-life) and you get 36. You then calculate the third half life by dividing 36/2 which equals 18 grams.
Spinach and broccoli are high in Iron. The respiratory system needs constant supplies of iron to maintain healthy blood cells. Not having enough Iron can lead to low numbers of red blood cells, without red blood cells not enough blood will flow to organs, causing iron deficient anemia.
Hope this helps!
