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^-#.
According to Svante Arrhenius acids are compounds which, when dissolved in water produce hydrogen ions (H +), bases are compounds which, when dissolved in water produce hydroxide ions (OH -).The strength of an acid or a base is the relative number of hydroxide and hydrogen ions measured by the pH scale.Thus, the pH is âthe negative of the common logarithm of the hydronium ion concentration of a solutionâ [(6), p.485].Acids described by Arrhenius are ionizable hydrogen atoms which when combined with water form a hydronium ion (H 3 O +). In aqueous solutions all hydrogen ions are hydronium ions.hus, the pH is âthe negative of the common logarithm of the hydronium ion concentration of a solutionâ [(6), p.485]. Acids described by Arrhenius are ionizable hydrogen atoms which when combined with water form a hydronium ion (H 3 O +). In aqueous solutions all hydrogen ions are hydronium ions.