Gary Name Meaning & Origin. Gary. Origin of the name Gary: From the Old English Garwig (spear of battle), a compound name composed from the elements gar (a spear) and wig (battle). Alternatively, Gary developed as a pet form of any of the various names beginning with the Germanic element gar (spear). Var: Garry.
So if you require 3 liters per minute of oxygen, that amount of oxygen is delivered to you throughout one minute whether you take 20 breaths each minute or 10. Continuous flow oxygen concentrators deliver a set amount of oxygen per minute when set to the corresponding setting.
Oxygen has 6 valence electrons and it needs 2 more electrons to achieve octet. The number of. electrons needed to complete octet is termed as the valency of an element. This value can be obtained. by subtracting the number of valence electrons from octet (8). So, the valency of Oxygen is 2.