NIOBIUM

Niobium is a chemical element with atomic number 41 located in Group 5 of the periodic table of elements. Symbolized as Nb. It is a transition metal ductile, gray, soft and not abundant.Niobe is the daughter of Tantalus, the sister of outbreaks and Pelops. Niobium had married the King of Thebes, Amphion. Had had with many children, the legend says 20. Proud of their offspring boasted of having surpassed Leto, who only had to Apollo and Artemis, they then punished and killed with their bows to young people and girls. For nine days and nine nights Niobe wept over the bodies.According to another legend Phoroneus daughter of the Argive, who was the arbitrator in between was discussed and Poseidon.

CADMIUM

It is a chemical element that has the symbol Cd, atomic number 48, located in Group 12 of the periodic table.
From Latin cadmium, old name of zinc carbonate. Cadmus, the son of Agenor, King of Tire. He sent for his sister and then return without her. He was with his mother, Telephassa, also called Argiope. In Rhodes built a temple in honor of Poseidon. His mother died in the country of Thrace. The oracle told them to abandon the search of his sister, Europa, and follow a cow. When Cadmus advised to sacrifice a cow, they found a large snake that killed many of the companions of Cadmus. This killed her with a rock and then sowed panic l teeth of the snake. At Cadmus, is credited in Greece the spread of the alphabet and the art of spreading metals