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.
This is because technetium produces beta particles without gamma rays. Technetium is the only element that is artificially produced. This property gives technetium its name, from the Greek for artificial.. Technetium is a radioactive metal that looks a lot like platinum. Technetium has the second largest magnetic penetration depth after niobium. Solid metallic technetium is shiny and has a slow rate of oxidation to tarnish in air. In its powdered form, technetium will burn.