The holmium is a chemical element that is within the group of lanthanides, this has an atomic weight of 164.9 atomic number equal to 67, simbolizándose by the acronym Ho. This is a metalloid with a characteristic very bright silvery color that has magnetic affinity with iron, however, like dysprosium, this capacity is modified with the decrease in temperature, being momentarily antiferromagnetic (without magnetism due to iron), and then a period of time returns to possess its capacity of magnetism.
Holmium has low hardness, being a fairly soft and malleable metalloid, being very stable in contact with dry air at room temperature, a panorama that is modified when subjected to humidity at high temperatures. Holmium has its origin from the word “ Stockholm ”, this is the name of the Swedish city from which the two scientists who discovered this element come, they respond to the names of Marc Delafontaine and Jacques-Louis Soret, they recorded that They had contact for the first time with holmium in 1878, when they reacted light rays with this chemical element, they realized its high absorption capacity, for this reason they gave it the nickname of “ element X "In turn or in parallel, holmium was studied by the Swedish scientist" Per Teodor Cleve "who was a resident of the same city and for this reason it was who gave him the name of the element.
This chemical product is used mainly in the construction of screens for televisions like the other elements of the lanthanides, beginning its use at the time of the development of color televisions, just as it is applied in the manufacture of lamps and crystals they radiate fluorescent colored lights, and today its implementation has increased because it has an important role in the development of catalyst agents for glass polishing agents. Another characteristic that it shares with those of rare earths is that it is found in small proportions in nature, and can generate adverse effects on the manipulator, at the level of the lungs and liver.
