What portion of the periodic table displays a combination of properties from two different parts of the periodic table?

Different isotopes indicate that an element will have different numbers of

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Answer explain why it is not possible to deduce a complete order of reactivity.