Definition of IGM. 1. : a class of immunoglobulins of high molecular weight including the primary antibodies that are released into the blood early in the immune response to be replaced later by IgG and that are highly efficient in binding complement.2.: an antibody of the class IgM.ADVERTISEMENT.efinition of IGM. 1. : a class of immunoglobulins of high molecular weight including the primary antibodies that are released into the blood early in the immune response to be replaced later by IgG and that are highly efficient in binding complement. 2. : an antibody of the class IgM. ADVERTISEMENT.
Calcium hydroxide is an Arrhenius base. You can see that it consists of a cation (we know calcium should be a cation because it is a metal on the left side of the periodic table bonded to elements on the right side). The anions are hydroxyl groups. #Ca(OH)_2->Ca^(2+)+2OH^-#.
the arrhenius definition of a base is a species that tends to donate hydroxide ions or accept hydrogen ions in solution on the other hand an arrhenius acid tends to donate hydrogen ions or accept hydroxide ions therefore as you guessed when hydrogen ion concentration decreases ph increases the h3o ion is called a hydronium ion and this alternate definition of ph is equivalent to the first to see why consider what actually happens when an arrhenius acid dissociates in an aqueous water containing solution ha h2o a h3o in this reaction ha is the acid and a is its conjugate base