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.
Bogota. Colombia's capital of Bogota is in the central part of the country. The city is situated in the Andes mountain chain and is surrounded by five rivers, including the Bogota River.Bogota is considered the educational and cultural center of Colombia.olombia's capital of Bogota is in the central part of the country. The city is situated in the Andes mountain chain and is surrounded by five rivers, including the Bogota River.
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.