Continuing to fill the Periodic Table, the electron configuration changes as well.
Nonmetals are at the right of the Table.
They tend to be insulators and react easily with metals. Atomic size varies for a given atom depending on how one performs their measurement and on the state in which the atom exists. This varies if the atoms in question are covalently bonded, ionically bonded, or held together by metallic bonds or dispersive interactions. In general the atomic size varies in a systematic and periodic fashion as we discussed in class and the figure illustrates this pattern. Another method of presenting this information clearly illustrates the periodicity of this property.