Or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one Thus Kr has a smaller atomic radius becasue of its ability to have a tighter grasp on its electrons becasue of the stronger charge generated by its nucleus. Kr has 36 protons with which to generate pull on the electrons.
K has 19 protons with which to generate pull on the electrons. K has one electron in the fouth energy level and Kr has eight electrons in the fouth energy level. The differences in atomic radii are the result of differing amounts of protons between atoms whose electrons are in the same energy level.
On the right side of the periodic table the elements are moving closer to filling the energy level. If we consider moving through the periodic table in numerical order, the left side of the periodic table features atoms that have just begun to add electrons to new energy levels. Thus the outermost energy level for the electrons of each atom is the same. If we look at elements of the same period the prinicipal quantum number for each one of these elements is the same.
