Answer:
D) He
Explanation:
Helium is in the first period. It only has 1 valence electron so it's very reactive. (This could be completely wrong and I'm sorry if it is.)
<span>he complete oxidation of one glucose molecule yields 30 or more ATP. Glucose catabolism includes glycolysis, pyruvate oxidation, and the citric acid cycle. The total yield of ATP includes ATP, GTP, and reduced cofactors that yield ATP from the electron transport chain and oxidative phosphorylation.</span>
Alcohal is in liquid state and in plasma free electrons are present
Calcium is defined as a metal because of both its physical and chemical traits. They all have an outer shell with two electrons and are very reactive. Those elements in the second column have two electrons ready to make compounds. It shouldn't surprise you that calcium has a valence of 2.