Los átomos que no poseen son conocidos como . Los átomos que poseen carga se denominan , aquellos con carga positiva de llaman y son aquellos que electrones. Los son aquellos con carga negativa y son los que electrones. Para todos los casos el valor de y permanecen iguales y son los que sacamos de la tabla periódica.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.