Use your periodic table to identify the name for each element in a compound

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Which of the following electromagnetic waves can create ions?

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.