Internal Examination of a Newly Hatched Alligator. A professional can determine the gender of a very small baby alligator, 6 to 10 inches long. One method is to place the creature on its back and hold open his vent with round-tipped tweezers or forceps, with a helper's assistance.
Technetium is the only element below uranium that does not exist on Earth. It is a synthetic (man-made) element produced in a particle accelerator. For many years, chemists knew that an element with atomic number 43 must exist, based on an empty spot in the periodic table.
Technetium -99m is produced by bombarding molybdenum 98 Mo with neutrons. The resultant 99 Mo decays with a half-life of 66 hours to the metastable state of Tc. This process permits the production of 99m Tc for medical purposes.Since 99 Mo is a fission product of 235 U fission, it can be separated from the other fission products and used to generate 99m Tc.For medical purposes, the 99m Tc is used in the form of pertechnate, TcO 4 - . The technetium isotope 99m Tc is unusual in that it has a half-life for gamma emission of 6.03 hours.ince 99 Mo is a fission product of 235 U fission, it can be separated from the other fission products and used to generate 99m Tc. For medical purposes, the 99m Tc is used in the form of pertechnate, TcO 4 - . The technetium isotope 99m Tc is unusual in that it has a half-life for gamma emission of 6.03 hours.