Strong acids are acids that ionize completely in a solution. For example in water one mole of a strong acid HA dissolves causing one mole of H+ and one mole of the conjugate base A-. None of the ionized acid remains.
The Acids are as follows (left to right): Hydrochloric Acid, Hydrobromic Acid, Hydroionic Acid, Chloric Acid, Bromic Acid, Hypoiodous Acid, Perchloric Acid, Perbromic Acid, Periodic Acid, Sulfuric Acid, Nitric Acid.