Provide names for the following complexes: a) K[Cr(ox)2(OH2)2] b) [Co(NH3)5Br](NO3)2 c) [Cr(en)2Cl2]PF6 d) [Co(bpy)2(OH)Cl]ClO4 e) [TiCl3(OH2)3] f) K3[Fe(CN)6] g) Na[Au(bpy)(CN)2] Exercise

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.