WHAT ARE RADIOISOTOPES ? Many of the chemical elements have a number of isotopes. The isotopes of an element have the same number of protons in their atoms (atomic number) but different masses due to different numbers of neutrons. In an atom in the neutral state, the number of external electrons also equals the atomic number.
Ciudad Perdida Archaelological Park (Colombia.travel), also known as Teyuna, is on the Buritaca River in the Sierra Nevada de Santa Marta mountain range. Ciudad Perdida, which means lost city, is not easy to get to but visitors can enjoy the beauty of exotic forests, waterfalls and hanging bridges on the way.ierradentro Archaeological Park. Tierradentro Archaeological Park (colombia.travel) is in a mountainous region in southwest Colombia's Department of Cauca. A popular archaeological site, Tierradentro includes stone statues and underground tombs that reach 29 feet deep.
The Independence Day of Colombia is celebrated with unequalled festive fervor. The day falls on 20th July every year when all the office, school and college establishments remain closed.Various festivals and events are held on this occasion at different cities and towns of the country.rief History of the Independence Day of Colombia. Christopher Colombus is credited with the discovery of Colombia. During the earlier times, the land of Colombia was under the Spanish rule since 1500.