The metalloids fall in between, near. the zigzag line. This trend isnât a coincidence. The number of valence electrons, or electrons in the. outer shell, determines how an element acts. For example, metals have few electrons in their outer shell. This causes them to possess metallic properties such as, conductivity & reactivity. Conversely, the. nonmetals on the right of the periodic table have almost complete sets of electrons in their outer level.
While relations between Cuba & the United States are improving, itâs still technically illegal to travel there. Hereâs how you can travel to Cuba as an American anyway. UPDATE: As of August 2016, there are now regular flights to Cuba from the United States from certain airlines/cities. Keep reading for more information.
Most visitors to Cuba, including Americans, need a tourist card to enter the country. If you are traveling with an organization or on a charter flight, they will normally process the tourist card as part of the package.